5K Races in Colorado
304 upcoming 5k races across Colorado, updated nightly. Want radius search and maps? Open these in the Race Finder.
When to race: 5k races in Colorado
Colorado has 304 upcoming 5k races over the next 12 months. September is the busiest month for them, with 89. Most are around Denver, Colorado Springs, Centennial. The next one is Widefield Cross Country Invitational on September 4 in Colorado Springs.
- Sep 202689 races
- Oct 202663 races
- Nov 202641 races
- Dec 202623 races
- Jan 202715 races
- Feb 202711 races
- Mar 202712 races
- Apr 202712 races
- May 202710 races
- Jun 20278 races
- Jul 202711 races
- Aug 20279 races
September 2026
- Fri 9/4Widefield Cross Country InvitationalColorado Springs, CO · 2.5K · 5K · registration closed · register ↗
- Fri 9/4Wyoming InvitationalCheyenne, CO · 5K · registration closed · register ↗
- Sat 9/5Aspen parkrunHerron Park, CO · 5K · every Saturday, 53 dates · register ↗
- Sat 9/5Break Your Neck: Walk, Run, or RollPueblo, CO · 5K · 10K · register ↗
- Sat 9/5Colby SandboxChico, CO · 5K · 12K · 24K · registration closed · register ↗
- Sat 9/5Demon DashArvada, CO · 5K · from $25 · register ↗
- Sat 9/5Demons InviteArvada, CO · 5K · registration closed · register ↗
- Sat 9/5Golden Harvest Half Marathon & 5k/10k - DenverWestminster, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 9/5Liberty Bell XC InvitationalLittleton, CO · 5K · registration closed · register ↗
- Sat 9/5Recovery Run of the Rockies 5KFort Collins, CO · 5K · from $30 · register ↗
- Sat 9/5South Boulder Creek parkrunSouth Boulder Creek, CO · 5K · every Saturday, 53 dates · register ↗
- Sat 9/5South Fork Alder Ass RaceSouth Fork, CO · 11 Miles · 5K · from $40 · registration closed · register ↗
- Sat 9/5The Beaver RunBreckenridge, CO · 5K · 10K · from $40 · register ↗
- Sun 9/6Golden Harvest Half Marathon & 5k/10k - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Mon 9/7FCA All-Abilities Labor Day 5KLoveland, CO · 5K · 1 Mile · from $10 · register ↗
- Mon 9/7Labor Day Half MarathonParker, CO · Half Marathon · 10K · 5K · from $27 · register ↗
- Mon 9/7Oak Creek No Fun RunOak Creek, CO · 5K · from $25 · register ↗
- Fri 9/11Res Hill RuckPagosa Springs, CO · 5K · from $40 · register ↗
- Sat 9/122026 RiNo 5K + Larimer MileDenver, CO · 5K · 1 Mile · register ↗
- Sat 9/124th Highland Homecoming 5k Run & WalkAult, CO · 5K · from $25 · register ↗
- Sat 9/126 Dot DashLittleton, CO · 5K · from $40 · register ↗
- Sat 9/12CASA Superhero RunGlenwood Springs, CO · 5K · 1 Mile · register ↗
- Sat 9/12Denver 5K On The RunwayDenver, CO · 5K · register ↗
- Sat 9/12For The City Network 5KGreeley, CO · 5K · from $35 · register ↗
- Sat 9/12Gleneagle Spirit 5K Run, Walk, and Kids Fun RunColorado Springs, CO · 5K · register ↗
- Sat 9/12NEDNED Trail FestNederland, CO · Half Marathon · 10K · 5K · Trail · register ↗
- Sat 9/12National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 9/12Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 9/12Snow Mountain RanchGranby, CO · 50K · 33K · Half Marathon · 10K · 5K · Trail · register ↗
- Sat 9/12Spirit of the Valley 5kGrand Junction, CO · 5K · 1K · from $10 · register ↗
- Sat 9/12Tater Trot 5KMonte Vista, CO · 5K · from $25 · register ↗
- Sat 9/12The 10th Annual Run4Hope 5K for SchoolsMonument, CO · 5K · 2 Mile · from $30 · register ↗
- Sat 9/12The Denver 5kDenver, CO · 5K · from $35 · register ↗
- Sun 9/1331st El Grito 5k (2026)Denver, CO · 5K · from $20 · register ↗
- Sun 9/139/11 Heroes Run - Denver, ColoradoDenver, CO · 5K · 1 Mile · from $21 · register ↗
- Sun 9/13Mad Dash 5KMilliken, CO · 5K · from $40 · register ↗
- Sun 9/13NUN RUNCentennial, CO · Half Marathon · 5K · 1 Mile · register ↗
- Sun 9/13New Vision 5KLoveland, CO · 5K · register ↗
- Sun 9/13RMRR September 5k/10kThornton, CO · 10K · 5K · from $10 · register ↗
- Sun 9/13Tiger Prowl 5KDenver, CO · 5K · from $20 · register ↗
- Fri 9/18Severance Glow 5K Run or WalkSeverance, CO · 5K · from $30 · register ↗
- Sat 9/192026 ColorFest Color Run/Walk 5KPagosa Springs, CO · 5K · from $35 · register ↗
- Sat 9/192026 Montbello Alive! 5KDenver, CO · 5K · from $25 · register ↗
- Sat 9/19All-Out Fall FestWestminster, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 9/19Autumn RunBuena Vista, CO · Half Marathon · 10K · 5K · 1K · from $30 · register ↗
- Sat 9/19Balanced Movement Yoga - Charity Fun 5K Walk/Run (Dog-Friendly)Evans, CO · 5K · 2K · register ↗
- Sat 9/19Beulah Challenge and OverIt SeriesBeulah, CO · 10K · 5K · 32.4 Miles · from $20 · register ↗
- Sat 9/19Champions for Children 5K Run/Walk + Fun RunCommerce City, CO · 5K · 1 Mile · from $10 · register ↗
- Sat 9/19Denver: Walk With Autism and Resource FairDenver, CO · 6K · 5K · from $25 · register ↗
- Sat 9/19Gummball 5KBrighton, CO · 5K · from $30 · register ↗
- Sat 9/19Lederhosen Race 2026Red Feather Lakes, CO · 3.6 Miles · from $35 · register ↗
- Sat 9/19Marine Memorial 5KArvada, CO · 5K · register ↗
- Sat 9/19Mayor's Cup 5k/10kWoodland Park, CO · 10K · 5K · register ↗
- Sat 9/19Miles 4 Madison 5K & 1KLittleton, CO · 5K · 0.6 Miles · from $25 · register ↗
- Sat 9/19Stride for Hope 5K and Kids Fun RunDelta, CO · 5K · 1 Mile · from $15 · register ↗
- Sat 9/19The Sunlight ShowdownGlenwood Springs, CO · 5K · 10K · Half Marathon · from $35 · register ↗
- Sat 9/19Wellington STAR Foundation 5K 10KWellington, CO · 5K · 10K · from $10 · register ↗
- Sun 9/2018th Annual Be Ovary Aware 5k run 3k walkColorado Springs, CO · 5K · 3K · register ↗
- Sun 9/2020th Annual Golden GallopGolden, CO · 5K · 10K · 20K · from $25 · register ↗
- Sun 9/2025th Annual Second Wind Fund Walk/RunLittleton, CO · 5K · 1 Mile · register ↗
- Sun 9/20Chile & Frijole Hot to Trot 5K & 10KPueblo, CO · 5K · 10K · from $35 · register ↗
- Sun 9/20Connection 5kCARBONDALE, CO · 5K · from $20 · register ↗
- Sun 9/20Expo Park XC RunsAurora, CO · 5K · 2K · 3K · 4K · from $22 · register ↗
- Sun 9/20Farmers 5000Wheat Ridge, CO · 5K · from $10 · register ↗
- Fri 9/25Boggy Draw Bear ChaseDolores, CO · 3K · 5K · registration closed · register ↗
- Fri 9/25NW Open Spaces 5k XC PR ChallengeNorthglenn, CO · 5K · registration closed · register ↗
- Sat 9/262026 Oktoberfest 5kBreckenridge, CO · 5K · register ↗
- Sat 9/262026 Suicide Prevention Color Walk/RunCenter, CO · 5K · from $25 · register ↗
- Sat 9/2625th Annual Black Canyon TriathlonMontrose, CO · 5K · from $20 · register ↗
- Sat 9/26Bayfield Heritage Days 5kBayfield, CO · 5K · from $20 · register ↗
- Sat 9/26HRCA Oktoberfest 5KLittleton, CO · 5K · from $40 · register ↗
- Sat 9/26Lisa Nelson’s Mustang Stampede 5KArvada, CO · 5K · from $25 · register ↗
- Sat 9/26McGinn Memorial Cross Country ChallengePagosa Springs, CO · 3K · 5K · registration closed · register ↗
- Sat 9/26Mesa County Search & Rescue 5KFruita, CO · 5K · from $25 · register ↗
- Sat 9/26NIGHT NATION RUN - DENVERCommerce City, CO · 5K · from $35 · register ↗
- Sat 9/26Oktoberfest Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 9/26Pagosa Mountain Chile Cha Cha Trail RacesPagosa Springs, CO · 5K · 10K · Trail · from $30 · register ↗
- Sat 9/26Parker Parks and Recreation So Long to Summer 5K/10KParker, CO · 5K · 10K · from $40 · register ↗
- Sat 9/26Run For Your Flapjacks 5KOak Creek, CO · 5K · from $20 · register ↗
- Sat 9/26Run for Donuts 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 9/26Runway 5K - Run for the AngelsBroomfield, CO · 5K · from $25 · register ↗
- Sun 9/2714er Fest 14K & 5KBuena Vista, CO · 14K · 5K · from $35 · register ↗
- Sun 9/27Flyin' Lion 5KLittleton, CO · 5K · from $15 · register ↗
- Sun 9/27Grand Valley Brew RunsGrand Junction, CO · 5K · from $35 · register ↗
- Sun 9/27Greenland Open Space Pack Burro Race presented by Double Rainbow Ranch (8 Mile and 3 Mile)Larkspur, CO · 8 Miles · 5K · from $60 · register ↗
- Sun 9/27Joy & Justice 5kTimnath, CO · 5K · 1 Mile · from $15 · register ↗
- Sun 9/27Pat Mahan Memorial Foundation 5KWiggins, CO · 5K · from $40 · register ↗
- Sun 9/27Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - ColoradoBoulder, CO · Half Marathon · 5K · 10K · from $40 · register ↗
- Sun 9/27WWE ANNUAL RUN WITH THE WOLVESArvada, CO · 5K · 1K · from $25 · register ↗
October 2026
- Sat 10/3Big Waves Family Superhero 5K run/walkWestminster, CO · 5K · from $45 · register ↗
- Sat 10/3Colorado Springs Marathon, Half, 5K, and Kids KColorado Springs, CO · Marathon · Half Marathon · 5K · 1K · from $8 · register ↗
- Sat 10/3Ethiopians 5KAurora, CO · 5K · register ↗
- Sat 10/3Family Soccer 5k runAurora, CO · 5K · register ↗
- Sat 10/3Homecoming 5K - Colorado State UniversityFort Collins, CO · 5K · from $25 · register ↗
- Sat 10/3I Can 5kThornton, CO · 5K · register ↗
- Sat 10/3Lafayette Music Fest -5K - 10KLafayette, CO · 10K · 5K · from $40 · register ↗
- Sat 10/3Mustang Music 5KFort Collins, CO · 5K · 1 Mile · from $20 · register ↗
- Sat 10/3PRA Miner Gold RushBroomfield, CO · 5K · 1 Mile · from $15 · register ↗
- Sat 10/3Rainbow Trail Lutheran Camp's 20th Annual Grace Race 5kDenver, CO · 5K · Trail · from $40 · register ↗
- Sat 10/3Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half MarathonCanon City, CO · 5K · 8 Miles · Half Marathon · 10K · Trail · from $40 · register ↗
- Sat 10/3Rut Run 5kEstes Park, CO · 5K · register ↗
- Sat 10/3Spooky Sprint - DenverLittleton, CO · 1 Mile · 5K · 10K · Half Marathon · from $20 · register ↗
- Sun 10/4Liberty Energy 5K - Benefiting the Bettering Human Lives FoundationDenver, CO · 5K · 1K · from $25 · register ↗
- Sun 10/4RMRR October 5k/8miAurora, CO · 8 Miles · 5K · from $10 · register ↗
- Sun 10/4Rubey Rescue RunAspen, CO · 3.5 Miles · 1 Mile · from $60 · register ↗
- Sun 10/4Strides for Sierra 5K run/walkArvada, CO · 5K · 1K · from $10 · register ↗
- Sun 10/4Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile RunWindsor, CO · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $20 · register ↗
- Sat 10/10ASDAsh 5K to Beat Tooth DecayAurora, CO · 5K · from $30 · register ↗
- Sat 10/10Breckenridge RunFestBreckenridge, CO · Marathon · Half Marathon · 10K · 5K · 1 Mile · from $25 · register ↗
- Sat 10/10Coffee Lovers Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 10/10Cookie Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 10/10Faith & Blue 5KFort Morgan, CO · 5K · register ↗
- Sat 10/10Footsteps for Families 5k Fun Run & ConcertWindsor, CO · 5K · from $20 · register ↗
- Sat 10/10Kipling Villas 5K - 2026Littleton, CO · 5K · from $15 · register ↗
- Sat 10/10Manitou 5KManitou Springs, CO · 5K · from $25 · register ↗
- Sat 10/10Suffer Better 10th Annual Fall Trail RunsPine, CO · 50K · 25K · 5K · Trail · from $25 · register ↗
- Sat 10/10The Long View MarathonFort Collins, CO · Marathon · Half Marathon · 5K · from $35 · register ↗
- Sun 10/11Kitty Beanz Cat 5kAurora, CO · 5K · from $35 · register ↗
- Sun 10/11The Moony Pride 5kFort Collins, CO · 5K · register ↗
- Sun 10/11Westy Half & 5kWestminster, CO · Half Marathon · 5K · from $30 · register ↗
- Sun 10/11Your Story Isn't Over 5k/10k/Kids 1-MileLittleton, CO · 1 Mile · 10K · 5K · from $20 · register ↗
- Fri 10/16Whistle Pig InvitationalCraig, CO · 5K · registration closed · register ↗
- Sat 10/17A2A Hero Run/Walk 5KPueblo, CO · 5K · from $20 · register ↗
- Sat 10/17Beti Bike BashElbert, CO · 10 Mile · 4.5 Miles · from $40 · register ↗
- Sat 10/17Bobcat Trail RacesColorado Springs, CO · 50K · 25K · 10K · 5K · Trail · register ↗
- Sat 10/17Kokopelli XC InvitationalColorado Springs, CO · 5K · register ↗
- Sat 10/17Living Water 5K and Family Fun RunDenver, CO · 5K · 1 Mile · from $25 · register ↗
- Sat 10/17Longmonster Dash 5kLongmont, CO · 5K · from $40 · register ↗
- Sat 10/17Running Scared 5K/13K - DenverLittleton, CO · 5K · 13K · 18K · from $30 · register ↗
- Sun 10/18Halloween Hustle for CharityGlenwood Springs, CO · 1.5K · 5.5K · from $30 · register ↗
- Sun 10/18Running Scared 5K/13K - Colorado SpringsColorado Springs, CO · 5K · 13K · 18K · from $30 · register ↗
- Wed 10/21DU Crimson Classic 5K Run/1.5 Mile WalkDenver, CO · 5K · 1.5 Miles · register ↗
- Sat 10/24Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP FitnessArvada, CO · 5K · 1 Mile · from $10 · register ↗
- Sat 10/24Hoofin' It Through the Hollows 5KCentennial, CO · 5K · from $15 · register ↗
- Sat 10/24Mancos Cowboy Half Marathon, 5K, and Fun RunMancos, CO · Half Marathon · 5K · 1 Mile · from $25 · register ↗
- Sat 10/24Race to Cure Sarcoma DenverDenver, CO · 5K · 1K · from $10 · register ↗
- Sat 10/24YMCA Creepy Crawl 5K presented by Corwin HondaPalmer Lake, CO · 5K · 0.8 Miles · from $40 · register ↗
- Sat 10/24YMCA of Pueblo Race SeriesPueblo, CO · 5K · from $80 · register ↗
- Sat 10/24YMCA of Pueblo Spooky Sprint 5KPueblo, CO · 5K · from $30 · register ↗
- Sat 10/24Zedikiah Scholarship 5KDenver, CO · 5K · register ↗
- Sun 10/25Beware the Bear Trail RacesLakewood, CO · 15K · 5K · 1K · Trail · register ↗
- Sun 10/25Ghosts and Goblins 5K/10KDenver, CO · 5K · 10K · from $30 · register ↗
- Sun 10/25The 14th Annual Odyssey Odyssey - 2026Denver, CO · 5K · 1 Mile · register ↗
- Sat 10/31EAPL Zombie Run 5KEvergreen, CO · 5K · register ↗
- Sat 10/31Halloween Fun 5kSteamboat Springs, CO · 5K · from $26 · register ↗
- Sat 10/31Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 10/31Halloween Zombie Fun Run 5k & 1mileIdaho Springs, CO · 5K · 1 Mile · from $25 · register ↗
- Sat 10/31I Ain't Scared (of 5k)Thornton, CO · 5K · from $29 · register ↗
- Sat 10/31PB&J Fuel Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 10/31Panda Waddle 5kGrand Junction, CO · 5K · register ↗
- Sat 10/31Spooky Sprint - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 10/31Woodmen Hills Monster Mash 5k and Beer RunPeyton, CO · 5K · registration closed · register ↗
November 2026
- Sun 11/1All-Out Kooky-SpookyGolden, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sun 11/1Feet for Justice RunDenver, CO · 10K · 5K · from $10 · register ↗
- Sun 11/1Girls on the Run Northern Colorado Fall 5K presented by Sprouts Healthy Communities FoundationFort Collins, CO · 5K · from $29 · register ↗
- Sun 11/1RMRR November 5k/15kDenver, CO · 15K · 5K · from $10 · register ↗
- Sat 11/712th edition Sole Mates 5k & Brew Fest presented by Shoes & Brews and Left Hand BrewingLongmont, CO · 5K · from $40 · register ↗
- Sat 11/7Alamosa Veterans Memorial Park RaceAlamosa, CO · 5K · 10K · from $20 · register ↗
- Sat 11/7Break a Leg 5kGrand Junction, CO · 5K · from $30 · registration closed · register ↗
- Sat 11/7City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)Denver, CO · 5K · 10K · 1 Mile · from $16 · register ↗
- Sat 11/7Excel Eagle Trot 5K/1K Family Fun RunArvada, CO · 5K · 1K · from $25 · register ↗
- Sat 11/7Turkey Trails- DenverLittleton, CO · 1 Mile · 5K · 10K · Half Marathon · Trail · from $17 · register ↗
- Sun 11/8Colorado Springs Veterans Day 5kColorado Springs, CO · 5K · from $15 · register ↗
- Sun 11/8Turkey Trails - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · Trail · from $17 · register ↗
- Sat 11/14Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 11/14Denver Veterans Day RunDenver, CO · 5K · 10K · from $45 · register ↗
- Sat 11/14Leyden Rock Turkey Trot 5KArvada, CO · 5K · from $10 · register ↗
- Sat 11/14Lone Tree Reckoning Half and 5KLoveland, CO · Half Marathon · 5K · from $45 · register ↗
- Sat 11/14Louisville Trail RaceLouisville, CO · Half Marathon · 10K · 5K · Trail · register ↗
- Sat 11/14Salute to Veterans 5K/10K/Half Marathon - DenverAurora, CO · 5K · 10K · Half Marathon · from $15 · register ↗
- Sat 11/14Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 11/15Girls on the Run Denver Metro 5K presented by Sprouts Healthy Communities FoundationDenver, CO · 5K · from $19 · register ↗
- Sun 11/15Salute to Veterans 5K/10K/Half Marathon - Colorado SpringsColorado Springs, CO · 5K · 10K · Half Marathon · from $15 · register ↗
- Sat 11/21Feed Your Soul Turkey Trot 5KWheat Ridge, CO · 5K · register ↗
- Sat 11/21Pumpkin Pie 5K/10KDenver, CO · 5K · 10K · from $30 · register ↗
- Sat 11/21TURKEY TREK (13.1, 10k, 5k & 2k)Arvada, CO · Half Marathon · 10K · 5K · 2K · from $26 · register ↗
- Sat 11/21Turkey Trot PredictColorado Springs, CO · 5K · from $5 · register ↗
- Thu 11/262026 Loveland Turkey TrotLoveland, CO · 5K · from $5 · register ↗
- Thu 11/262026 TD5K (Turkey Day)Highlands Ranch, CO · 5K · register ↗
- Thu 11/26AdventHealth Avista Louisville Turkey TrotLouisville, CO · 5K · from $20 · register ↗
- Thu 11/26Alpine Bank Boulder Thanksgiving Day 5KBoulder, CO · 5K · 0.5 Miles · from $15 · register ↗
- Thu 11/26Broomfield Turkey Day 5K/10KBroomfield, CO · 10K · 5K · 0.5 Miles · from $17 · register ↗
- Thu 11/26Buena Vista Turkey Trot 5K & Family Fun RunBuena Vista, CO · 1 Mile · 5K · from $35 · register ↗
- Thu 11/26Gobble Wobble Run 2026Littleton, CO · 5K · from $35 · register ↗
- Thu 11/26Harvesting Hope 5kDenver, CO · 5K · from $20 · registration closed · register ↗
- Thu 11/26NCMC Turkey TrotGreeley, CO · 5K · 2K · from $30 · register ↗
- Thu 11/26Parker Parks and Recreation Turkey Day 5K FUN Run/WalkParker, CO · 5K · from $38 · register ↗
- Thu 11/26Pelican Lakes Turkey TrotWindsor, CO · 5K · from $30 · register ↗
- Thu 11/26WP Elite Turkey Trot and RuckWoodland Park, CO · 10K · 5K · register ↗
- Thu 11/26YMCA Turkey Trot 5K presented by Corwin HondaColorado Springs, CO · 5K · 0.6 Miles · from $45 · register ↗
- Thu 11/26YMCA of Pueblo Turkey TrotPueblo, CO · 5K · from $30 · registration closed · register ↗
- Sat 11/28Coffee Lovers Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 11/28Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
December 2026
- Sat 12/5All-Out Fa La LaWestminster, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 12/5Candy Cane Course - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · 15K · from $22 · register ↗
- Sat 12/5Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law GroupColorado Springs, CO · 5K · 6 Miles · 10 Mile · 21 Miles · from $20 · register ↗
- Sat 12/5Run with the Buffalo Fun Run: 5K DistanceCommerce City, CO · 5K · register ↗
- Sat 12/5Toy DropLoveland, CO · 5K · 10K · 15K · from $30 · register ↗
- Sun 12/6Candy Cane Course - DenverWestminster, CO · 1 Mile · 5K · 10K · 15K · from $22 · register ↗
- Sun 12/6Rock Canyon Half Marathon- 40th Anniversary Run!Pueblo, CO · Half Marathon · 5K · from $35 · register ↗
- Sun 12/6Rudolph Ramble 5K Run/WalkDenver, CO · 5K · register ↗
- Sun 12/6RunDenver Series 2026-27Denver, CO · 5K · 10K · Half Marathon · register ↗
- Sat 12/12Run for Breast Cancer 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 12/12Santa Catch 5k & 10kWindsor, CO · 5K · 10K · 1 Mile · from $15 · register ↗
- Sat 12/12Santa Shuffle 5KLittleton, CO · 5K · from $35 · register ↗
- Sat 12/12Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 12/12Superior Stocking RunSuperior, CO · 5K · from $25 · register ↗
- Sat 12/12WinterFest 5k & Fun RunThornton, CO · 5K · 0.7 Miles · from $12 · register ↗
- Sat 12/12YMCA Jingle Jog 5K presented by Corwin HondaFountain, CO · 5K · 0.8 Miles · from $35 · register ↗
- Sun 12/132026 Jingle Bell Run - ColoradoDenver, CO · 5K · 1 Mile · from $25 · register ↗
- Sat 12/19Santa's Dash for Ca$hDenver, CO · 5K · from $29 · register ↗
- Sat 12/19Sweaty Sweater 5kFort Collins, CO · 5K · 1 Mile · from $5 · register ↗
- Sun 12/20Ugly Sweater 5KDenver, CO · 5K · from $30 · register ↗
- Sat 12/26A Merry Christmas Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 12/26New Year's Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Thu 12/31Resolution Run - Fort CollinsFort Collins, CO · 5K · from $25 · registration closed · register ↗
January 2027
- Fri 1/1Resolute Runner 5kArvada, CO · 5K · from $39 · register ↗
- Sat 1/2YMCA of Pueblo Hot Chocolate 5KPueblo, CO · 5K · from $30 · registration closed · register ↗
- Sat 1/9All-Out Polar ProwlArvada, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 1/16Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 1/16MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 1/17Colorado Cold SnapLouisville, CO · 5K · 10K · from $39 · register ↗
- Sun 1/17Polar Bear 5KDenver, CO · 5K · register ↗
- Sat 1/23Chilly Willy 5K/10K/Half Marathon - Colorado SpringsColorado Springs, CO · 5K · 10K · Half Marathon · 13.1K · from $25 · register ↗
- Sun 1/24Freakin Freezin 5K - DenverDenver, CO · 5K · from $30 · register ↗
- Sun 1/24Yeti Chase 5k/10kMorrison, CO · 5K · 10K · from $25 · register ↗
- Sat 1/30Alley LoopCrested Butte, CO · Marathon · Half Marathon · 10K · 5K · 3K · from $25 · registration closed · register ↗
- Sat 1/30Coffee Lover Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 1/30Run for Donut DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 1/30Time Travel Half-Marathon/5K/10K - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $15 · register ↗
- Sun 1/31Time Travel Half-Marathon/5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $15 · register ↗
February 2027
- Sat 2/6All-Out Mardi CrawlArvada, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 2/6Westy Winter Waggle 5&10kWestminster, CO · 5K · 10K · from $35 · register ↗
- Sun 2/7Super Bowl 5KDenver, CO · 5K · register ↗
- Sat 2/13Heart Throb 5kArvada, CO · 5K · from $25 · register ↗
- Sat 2/13Run for Chocolate 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 2/13Valentine's Day Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 2/14Ralston Creek Half Marathon & 5kArvada, CO · Half Marathon · 5K · from $25 · register ↗
- Sun 2/14The Toyota Super Half Marathon™& Game Day 5K™Colorado Springs, CO · Half Marathon · 5K · from $35 · registration closed · register ↗
- Sat 2/27Run For Mental Health DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 2/27Run Together Against Breast Cancer DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 2/28Highlands Ranch 5kHighlands Ranch, CO · 5K · from $33 · register ↗
March 2027
- Sat 3/6Time to Paddy 5K/10K & Lucky 13.1 13.1 - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sun 3/7That Dam Run 13.1, 10K, 5KArapahoe County, CO · 5K · 10K · Half Marathon · register ↗
- Sun 3/7Time to Paddy 5K/10K & Lucky 13.1 - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 3/13Sharin' O' The Green 5kFort Collins, CO · 5K · registration closed · register ↗
- Sun 3/14Lucky Brew Race 5K, 10K, 15k & Half MarathonSeverance, CO · 5K · 10K · 15K · 0.6 Miles · Half Marathon · from $15 · register ↗
- Sat 3/20Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 3/20St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 3/21All-Out Spring FeverGolden, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sun 3/21Spring EquinoxWellington, CO · Half Marathon · 5K · from $25 · register ↗
- Sat 3/27Always Hope Easter Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 3/27SuperHeroes Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 3/28Central Park 5kDenver, CO · 5K · from $20 · register ↗
April 2027
- Sun 4/4Donut DashDenver, CO · 5K · from $30 · register ↗
- Sat 4/10Run for Bagels 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 4/11Platte River Half-Marathon, Relay & 5kLittleton, CO · Half Marathon · 5K · from $40 · register ↗
- Sat 4/17Rattler Trail RaceColorado Springs, CO · 50K · 25K · 10K · 5K · Trail · register ↗
- Sun 4/182027 Elevate Kids Fun RunGrand Junction, CO · 10K · 5K · 2K · 2.5K · register ↗
- Sat 4/24Coffee Lover Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 4/24Run for Donut DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 4/24All-Out Beat the HeatWestminster, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 4/24Bigfoot Half MarathonEstes Park, CO · Half Marathon · 5K · from $45 · register ↗
- Sat 4/24DoNot Stop Half Marathon/5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sun 4/25DoNot Stop Half Marathon/5K/10K - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sun 4/25Unicorn 5k (Denver-East)Denver, CO · 5K · from $13 · register ↗
May 2027
- Sat 5/1Take 5 in the GardenColorado Springs, CO · 5 Miles · 5K · register ↗
- Sun 5/2Emerge 5KBoulder, CO · 5K · registration closed · register ↗
- Sun 5/2The Colorado MarathonFort Collins, CO · Marathon · Half Marathon · 10K · 5K · from $40 · register ↗
- Sat 5/8Colterris Wine Run 5kPalisade, CO · 5K · from $30 · register ↗
- Sat 5/8Hometown Half Marathon/5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 5/8Run for Chocolate 5k/10k/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sun 5/9Colorado Women's Classic - WestminsterWestminster, CO · 5K · 10K · 10 Mile · from $35 · register ↗
- Sun 5/9Denver Mother's Day 5KDenver, CO · 5K · from $27 · registration closed · register ↗
- Sun 5/9Hometown Half Marathon/5K/10K - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sun 5/162027 Denver Colfax MarathonDENVER, CO · Marathon · 5K · Half Marathon · 10 Mile · register ↗
June 2027
- Sun 6/6Colorado 13er (Half Marathon/10k/5k)Louisville, CO · Half Marathon · 10K · 5K · from $30 · register ↗
- Sun 6/6Flamingo Day 5KDenver, CO · 5K · from $30 · register ↗
- Sat 6/12All-Out Summer BreezeArvada, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 6/12Alpha 5K ChallengeBoulder, CO · 5K · registration closed · register ↗
- Sat 6/19Red, White and Brew 5k, 10k & Half MarathonWindsor, CO · 5K · 10K · Half Marathon · 1 Mile · from $18 · register ↗
- Sat 6/19Treat Trot - DenverDenver, CO · 1 Mile · 5K · 10K · 15K · from $17 · register ↗
- Sat 6/19Unicorn 5k (North)Thornton, CO · 5K · 1K · from $16 · register ↗
- Sun 6/20Treat Trot Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · 15K · from $17 · register ↗
July 2027
- Sat 7/3Red, White, and WARRIOR 5KGrand Junction, CO · 5K · from $10 · registration closed · register ↗
- Sun 7/4Greeley Freedom 5k Walk & RunGreeley, CO · 5K · from $29 · register ↗
- Sun 7/4Independence Day Freedom 5KBuena Vista, CO · 5K · 3K · from $25 · registration closed · register ↗
- Sun 7/4Let Freedom Run 5k/10k - LouisvilleLouisville, CO · 5K · 10K · from $30 · register ↗
- Sat 7/10All-Out Dog DaysWestminster, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 7/10Cookie ChaseDenver, CO · 5K · from $30 · register ↗
- Sat 7/17Heatwave Half Marathon/5K/10K - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · registration closed · register ↗
- Sat 7/17Summer Splash Prairie Dog Half, 10k, & 5kCastle Rock, CO · Half Marathon · 10K · 5K · from $25 · register ↗
- Sun 7/18Heatwave Half Marathon/5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · registration closed · register ↗
- Sun 7/25Spirit of the West 5K Run/WalkGolden, CO · 5K · from $35 · register ↗
- Sat 7/31Popsicle 5K/10K/Half - Colorado SpringsColorado Springs, CO · 5K · 10K · Half Marathon · from $25 · registration closed · register ↗
August 2027
- Sat 8/7All-Out RunapaloozaArvada, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 8/7Dog Days of SummerLongmont, CO · 3.5 Miles · 1K · from $20 · registration closed · register ↗
- Sat 8/7RoC & Roll 5K: Run, Walk, or WheelFountain, CO · 5K · from $43 · register ↗
- Sat 8/7Summer Sizzler- DenverDenver, CO · 1 Mile · 5K · 10K · 15K · from $17 · registration closed · register ↗
- Sat 8/7Unicorn 5k (South)Highlands Ranch, CO · 5K · from $13 · register ↗
- Sun 8/8Summer Sizzler- Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · 15K · from $17 · registration closed · register ↗
- Sun 8/15Erie Half & 5kErie, CO · Half Marathon · 5K · from $30 · register ↗
- Sat 8/21Byers Peak Stampede Half Marathon & 5K RunFraser, CO · Half Marathon · 5K · from $45 · register ↗
- Sat 8/21Ram Run 5KDenver, CO · 5K · 1 Mile · from $10 · register ↗
Planning a race
- Race day checklistwhat to sort out the night before
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