5K Races in Colorado

381 upcoming 5k races across Colorado, updated nightly. Want radius search and maps? Open these in the Race Finder.

July 2026

Thu 7/23Durango Brewer's Trail SeriesDurango, CO · Other · 10K · 5K
Fri 7/24Flyin' Ryan Memorial 5kLoveland, CO · 5K
Sat 7/25Christmas 5K/10K/Half Marathon in July Meet Up - DenverLittleton, CO · 5K · 10K · Half Marathon
Sat 7/25Run for Coffee Lovers 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 7/25Run for Donuts 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 7/25Aspen Valley MarathonAspen, CO · Marathon · Half Marathon · 5K
Sat 7/25The Hero's Journey 5KAurora, CO · 5K · Other
Sat 7/25Golddigger 5KIdaho Springs, CO · 5K · Other
Sat 7/25Newbie to 5kPueblo, CO · 5K
Sat 7/25Staunton 5k Trail Race - 7/25/26Pine, CO · 5K
Sat 7/252nd Annual Pancreatic Cancer Awareness in Honor of Diana Cantu - 5K Fun Run/WalkAlamosa, CO · 5K
Sat 7/25Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 7/25South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 7/26Spirit of the West 5K Run/WalkGolden, CO · 5K · Other
Fri 7/31Peak to Peak All Comers MeetNederland, CO · Other · 1 Mile · 5K

August 2026

Sat 8/1Popsicle 5K/10K/Half - Colorado SpringsColorado Springs, CO · 5K · 10K · Half Marathon
Sat 8/1Boggy Draw Beat DownDolores, CO · 50K · Other · 5K
Sat 8/112th Annual Run for the RingAurora, CO · 5K
Sat 8/1Move with MADD Denver 5KDenver, CO · 5K
Sat 8/1STEPS TO EMPOWERColorado Springs, CO · 1 Mile · 5K
Sat 8/1Unicorn 5k (South)Highlands Ranch, CO · 5K
Sat 8/12026 Rocky Mountain Strength RendezvousLittleton, CO · 5K
Sat 8/1Snowshoe Shuffle 5K RunCreede, CO · 5K
Sat 8/1Flying Colors 5K Fun Run/WalkCraig, CO · 5K
Sat 8/1Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 8/1South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Tue 8/4Eltuck Valley 5K - Lory Summer Trail SeriesFort Collins, CO · 5K
Fri 8/7Choice City Running FestivalFort Collins, CO · 1 Mile · Half Marathon · 10K · 5K
Fri 8/7RMRR August 5km and picnicCentennial, CO · 5K
Sat 8/8All-Out RunapaloozaArvada, CO · Half Marathon · 10K · 5K
Sat 8/8Summer Sizzler- DenverThornton, CO · Other · 1 Mile · 5K · 10K
Sat 8/8Arapahoe Warrior 5KCentennial, CO · 5K
Sat 8/8Dog Days of SummerLongmont, CO · 5K · Other
Sat 8/85K at the FairDurango, CO · 5K
Sat 8/8Escalante Days 5KDolores, CO · 5K
Sat 8/8Run to the Rails 5K (Sat)Strasburg, CO · 5K
Sat 8/8Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 8/8South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 8/9Summer Sizzler- Colorado SpringsColorado Springs, CO · Other · 1 Mile · 5K · 10K
Sun 8/9The Bullfrog Summer SurgeLakewood, CO · 5K · Other
Sun 8/9Pancake Stampede 5KLittleton, CO · 5K
Sun 8/9'BURG 5K (Sunday)Strasburg, CO · 5K
Sat 8/15Bagel Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 8/15Run for PB& J 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 8/15Westminster Trail RacesWestminster, CO · 50K · Other · 5K
Sat 8/15The Cheyenne Mountain RunColorado Springs, CO · 5K · 10K · Other
Sat 8/15Miles for Migraine ColoradoDenver, CO · Other · 5K
Sat 8/15Sunrise StampedeLongmont, CO · 5K · 1 Mile
Sat 8/15Miles for Migraine - Colorado 2026Denver, CO · Other · 5K
Sat 8/15Never Alone Foundation 5k At MVP 2026North End Park, CO · 5K
Sat 8/15Frontier Academy Community 5KGreeley, CO · 5K
Sat 8/15Yuma Police Department Donut 5kYuma, CO · 5K
Sat 8/15CWCS 5K Color Fun RunMontrose, CO · 5K
Sat 8/15Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 8/15South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 8/16Erie Half & 5kErie, CO · Half Marathon · 5K
Sun 8/16Cancer League of Colorado Race 4 ResearchDenver, CO · 5K
Tue 8/18Into the Hills Eltuck 5kBellvue, CO · 5K
Sat 8/22Byers Peak Stampede Half Marathon & 5K RunFraser, CO · Half Marathon · 5K
Sat 8/222026 True Impact Ministries 5K/10KCentennial, CO · 5K · 10K
Sat 8/22Jog in the Bog 5kWestminster, CO · 5K
Sat 8/22Ram RunDenver, CO · 5K · 1 Mile
Sat 8/22Coyote Chase 5kLouisville, CO · 5K
Sat 8/22Rocky Mountain Lobo InvitationalFort Collins, CO · 5K · 1 Mile
Sat 8/22Bergen Peak 5k Trail Race - 8/22/26Evergreen, CO · 5K
Sat 8/22Warrior Waterfront 5KGrand Junction, CO · 5K
Sat 8/22Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 8/22South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 8/23Pioneer Prairie Dog Half, 10k & 5kWestminster, CO · Half Marathon · 10K · 5K
Sun 8/23Rebel Run 5kDenver, CO · 5K · Other
Sun 8/2311th Annual Log Hill HustleRidgway, CO · 5K · 10K
Sat 8/29Run for Breast Cancer 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 8/29Sloth Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 8/29Rock HawkCastle Rock, CO · 50K · Other · 10K · 5K
Sat 8/29Glow & Roll: Illuminate What's PossibleLittleton, CO · 5K · 1 Mile
Sat 8/29RexRun For PAWSitivity 2026 Trail Run/WalkAurora, CO · 5K · 1 Mile
Sat 8/29Rocky Mountain 5K presented by School District 11Colorado Springs, CO · 5K · Other
Sat 8/29Run for Hope - Colorado SpringsColorado Springs, CO · 5K · 1 Mile
Sat 8/29Historic Elizabeth Main Street 5K & Family Color RunElizabeth, CO · 5K · 1 Mile
Sat 8/29Run Like the Wind 5k / 2k / Dog JogAllenspark, CO · 5K · 1 Mile
Sat 8/29Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 8/29South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 8/30James Test SiteLyons, CO · 5K · 10K
Sun 8/30Wine Run 5k at The Winery at Holy Cross AbbeyCanon City, CO · 5K

September 2026

Sat 9/5Golden Harvest Half Marathon & 5k/10k - DenverWestminster, CO · Other · 1 Mile · 5K · 10K · Half Marathon
Sat 9/5The Beaver RunBreckenridge, CO · 5K · 10K · Other
Sat 9/5Break Your Neck: Walk, Run, or RollPueblo, CO · 5K · 10K
Sat 9/5Demon DashArvada, CO · 5K
Sat 9/5South Fork Alder Ass RaceSouth Fork, CO · Other · 5K
Sat 9/5Recovery Run of the Rockies 5KFort Collins, CO · 5K
Sat 9/5Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 9/5South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 9/6Golden Harvest Half Marathon & 5k/10k - Colorado SpringsColorado Springs, CO · Other · 1 Mile · 5K · 10K · Half Marathon
Mon 9/7Labor Day Half MarathonParker, CO · Half Marathon · 10K · 5K
Mon 9/7FCA All Abilities Labor Day 5KLoveland, CO · 5K · 1 Mile
Mon 9/7Oak Creek No Fun RunOak Creek, CO · 5K
Sat 9/12National Chocolate Day: Run for Chocolates 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 9/12Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 9/12Snow Mountain RanchGranby, CO · 50K · Other · Half Marathon · 10K · 5K
Sat 9/12NEDNED Trail FestNederland, CO · Half Marathon · 10K · 5K
Sat 9/126 Dot DashLittleton, CO · 5K
Sat 9/12The Denver 5kDenver, CO · 5K
Sat 9/122026 RiNo 5K + Larimer MileDenver, CO · 5K · 1 Mile
Sat 9/12CASA Superhero RunGlenwood Springs, CO · 5K · 1 Mile
Sat 9/12Spirit of the Valley 5kGrand Junction, CO · 5K · Other
Sat 9/12Denver 5K On The RunwayDenver, CO · 5K
Sat 9/12For The City Network 5KGreeley, CO · 5K
Sat 9/12Tater Trot 5KMonte Vista, CO · 5K
Sat 9/12The 10th Annual Run4Hope 5K for SchoolsMonument, CO · 5K
Sat 9/12Gleneagle Spirit 5K Run, Walk, and Kids Fun RunColorado Springs, CO · 5K
Sat 9/12Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 9/12South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 9/13NUN RUNCentennial, CO · Half Marathon · 5K · 1 Mile
Sun 9/13RMRR September 5k/10kThornton, CO · 10K · 5K
Sun 9/139/11 Heroes Run - Denver, ColoradoDenver, CO · 5K · 1 Mile
Sun 9/1331st El Grito 5k (2026)Denver, CO · 5K
Sun 9/13Tiger Prowl 5KDenver, CO · 5K
Fri 9/18Severance Glow 5K Run or WalkSeverance, CO · 5K
Sat 9/19All-Out Fall FestWestminster, CO · Half Marathon · 10K · 5K
Sat 9/19Autumn RunBuena Vista, CO · Half Marathon · 10K · 5K · Other
Sat 9/19Beulah Challenge and OverIt Series - ON PAUSE DUE TO THE ASPEN ACRES FIREBeulah, CO · Half Marathon · 10K · 5K
Sat 9/192026 Montbello Alive! 5KDenver, CO · 5K
Sat 9/19Denver: Walk With Autism and Resource FairDenver, CO · 5K
Sat 9/19Marine Memorial 5KArvada, CO · 5K
Sat 9/19Miles 4 Madison 5K & 1KLittleton, CO · 5K · Other
Sat 9/19Wellington STAR Foundation 5K 10KWellington, CO · 5K · 10K
Sat 9/19Balanced Movement Yoga - Charity Fun 5K Walk/Run (Dog-Friendly)Evans, CO · 5K · 1 Mile
Sat 9/19Gummball 5KBrighton, CO · 5K
Sat 9/19Lederhosen Race 2026Red Feather Lakes, CO · 5K
Sat 9/19Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 9/19South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 9/2020th Annual Golden GallopGolden, CO · 5K · 10K · Half Marathon
Sun 9/20Expo Park XC RunsAurora, CO · 5K · 1 Mile · Other
Sun 9/20Chile & Frijole Hot to Trot 5K & 10KPueblo, CO · 5K · 10K
Sun 9/20Farmers 5000Wheat Ridge, CO · 5K
Sun 9/2018th Annual Be Ovary Aware 5k run 3k walkColorado Springs, CO · 5K · Other
Sun 9/2025th Annual Second Wind Fund Walk/RunLittleton, CO · 5K · 1 Mile
Fri 9/25Boggy Draw Bear ChaseDolores, CO · Other · 5K
Sat 9/26Oktoberfest Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 9/26Run for Donuts 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 9/2625th Annual Black Canyon TriathlonMontrose, CO · 5K
Sat 9/26Parker Parks and Recreation So Long to Summer 5K/10KParker, CO · 5K · 10K
Sat 9/26HRCA Oktoberfest 5KLittleton, CO · 5K
Sat 9/26Lisa Nelson’s Mustang Stampede 5KArvada, CO · 5K
Sat 9/26NIGHT NATION RUN - DENVERCommerce City, CO · 5K
Sat 9/26Runway 5K - Run for the AngelsBroomfield, CO · 5K
Sat 9/26McGinn Memorial Cross Country ChallengePagosa Springs, CO · Other · 5K
Sat 9/262026 Oktoberfest 5kBreckenridge, CO · 5K
Sat 9/262026 Suicide Prevention Color Walk/RunCenter, CO · 5K
Sat 9/26Mesa County Search & Rescue 5KFruita, CO · 5K
Sat 9/26Run For Your Flapjacks 5KOak Creek, CO · 5K
Sat 9/26Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 9/26South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 9/27Running for Children's Rights to Both Parents - 9 of 50 Half Marathons in 50 States - ColoradoBoulder, CO · Half Marathon · 5K · 10K
Sun 9/27Flyin' Lion 5KLittleton, CO · 5K
Sun 9/2714er Fest 14K & 5KBuena Vista, CO · Other · 5K
Sun 9/27Greenland Open Space Pack Burro Race presented by Double Rainbow Ranch (8 Mile and 3 Mile)Larkspur, CO · Other · 5K
Sun 9/27Joy & Justice 5kTimnath, CO · 5K · 1 Mile
Sun 9/27Grand Valley Brew RunsGrand Junction, CO · 5K
Sun 9/27Pat Mahan Memorial Foundation 5KWiggins, CO · 5K

October 2026

Fri 10/2Water For People World Water ClassicAnywhere, CO · 5K · Ultra
Sat 10/3Spooky Sprint - DenverLittleton, CO · Other · 1 Mile · 5K · 10K · Half Marathon
Sat 10/3Colorado Springs Marathon, Half, 5K, and Kids KColorado Springs, CO · Marathon · Half Marathon · 5K · Other
Sat 10/3Rim to Rim Royal Gorge Races: 5K Road Run, Trail 8 Mile, Trail Half MarathonCanon City, CO · 5K · Other · Half Marathon · 10K
Sat 10/3Lafayette Music Fest -5K - 10KLafayette, CO · 10K · 5K
Sat 10/3PRA Miner Gold RushBroomfield, CO · 5K · 1 Mile
Sat 10/3Big Waves Family 5K run/walkWestminster, CO · 5K
Sat 10/3I Can 5kThornton, CO · 5K
Sat 10/3Homecoming 5K - Colorado State UniversityFort Collins, CO · 5K
Sat 10/3Rut Run 5kEstes Park, CO · 5K
Sat 10/3Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 10/3South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 10/4Windsor Marathon, Half Marathon, 10k, 5k & 1 Mile RunWindsor, CO · Marathon · Half Marathon · 10K · 5K · 1 Mile
Sun 10/4RMRR October 5k/8miAurora, CO · Other · 5K
Sun 10/4Rubey Rescue RunAspen, CO · 5K · 1 Mile
Sun 10/4Fall Series - Get Dirty! Get Muddy!Colorado Springs, CO · 5K · Other
Wed 10/7Your Story Isn't Over 5k/10k/Kids 1-MileLittleton, CO · 1 Mile · 10K · 5K
Sat 10/10Bagel Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 10/10Breckenridge RunFestBreckenridge, CO · Marathon · Half Marathon · 10K · 5K · 1 Mile
Sat 10/10Coffee Lovers Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 10/10The Long View MarathonFort Collins, CO · Marathon · Half Marathon · 5K
Sat 10/10Suffer Better 10th Annual Fall Trail RunsPine, CO · 50K · Other · 5K
Sat 10/10Kipling Villas 5K - 2026Littleton, CO · 5K
Sat 10/10Manitou 5KManitou Springs, CO · 5K
Sat 10/10Dialysis Dash 5KGrand Junction, CO · 5K
Sat 10/10Footsteps for Families 5k Fun Run & ConcertWindsor, CO · 5K
Sat 10/10Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 10/10South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 10/11Westy Half & 5kWestminster, CO · Half Marathon · 5K
Sun 10/11The Moony Pride 5kFort Collins, CO · 5K
Fri 10/16Whistle Pig InvitationalCraig, CO · 5K
Sat 10/17Bobcat Trail RacesColorado Springs, CO · 50K · Other · 10K · 5K
Sat 10/17Living Water 5K and Family Fun RunDenver, CO · 5K
Sat 10/17Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 10/17South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 10/18Halloween Hustle for CharityGlenwood Springs, CO · 1 Mile · 5K
Sun 10/18The Palmer Lake .5K (Yes "Point" 5)Palmer Lake, CO · 5K
Wed 10/21DU Crimson Classic 5K Run/1.5 Mile WalkDenver, CO · 5K · 1 Mile
Sat 10/24Mancos Cowboy Half Marathon, 5K, and Fun RunMancos, CO · Half Marathon · 5K · 1 Mile
Sat 10/24Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP FitnessArvada, CO · 5K · 1 Mile
Sat 10/24Race to Cure Sarcoma DenverDenver, CO · 5K · Other
Sat 10/24YMCA Creepy Crawl 5K presented by Corwin HondaPalmer Lake, CO · 5K · 1 Mile
Sat 10/24YMCA of Pueblo Spooky Sprint 5KPueblo, CO · 5K
Sat 10/24Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 10/24South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 10/25Ghosts and Goblins 5K/10KDenver, CO · 5K · 10K
Sun 10/25The 14th Annual Odyssey Odyssey - 2026Denver, CO · 5K · 1 Mile
Sun 10/25Beware the Bear Trail RacesLakewood, CO · Other · 5K
Sat 10/31Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 10/31PB&J Fuel Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 10/31Spooky Sprint - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon
Sat 10/31I Ain't Scared (of 5k)Thornton, CO · 5K
Sat 10/31EAPL Zombie Run 5KEvergreen, CO · 5K
Sat 10/31Foundry Halloween 5kSteamboat Springs, CO · 5K
Sat 10/31Panda Waddle 5kGrand Junction, CO · 5K
Sat 10/31Halloween Fun Run 5k & 1mile - Zombie ThemeIdaho Springs, CO · 5K · 1 Mile
Sat 10/31Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 10/31South Boulder Creek parkrunSouth Boulder Creek, CO · 5K

November 2026

Sun 11/1All-Out Kooky-SpookyGolden, CO · Half Marathon · 10K · 5K
Sun 11/1Feet for Justice RunDenver, CO · 10K · 5K
Sun 11/1RMRR November 5k/15kDenver, CO · Other · 5K
Sun 11/1Girls on the Run Northern Colorado Fall 5KFort Collins, CO · 5K
Sat 11/7Turkey Trails- DenverLittleton, CO · Other · 1 Mile · 5K · 10K · Half Marathon
Sat 11/7City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)Denver, CO · 5K · 10K · 1 Mile
Sat 11/7Alamosa Veterans Memorial Park RaceAlamosa, CO · 5K · 10K
Sat 11/7Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 11/7South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 11/8Turkey Trails - Colorado SpringsColorado Springs, CO · Other · 1 Mile · 5K · 10K · Half Marathon
Sun 11/8Colorado Springs Veterans Day 5kColorado Springs, CO · 5K
Sat 11/14Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 11/14Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 11/14Louisville Trail RaceLouisville, CO · Half Marathon · 10K · 5K
Sat 11/14Denver Veterans Day RunDenver, CO · 5K · 10K
Sat 11/14Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 11/14South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 11/21TURKEY TREK (13.1, 10k, 5k & 2k)Arvada, CO · Half Marathon · 10K · 5K · 1 Mile
Sat 11/21Pumpkin Pie 5K/10KDenver, CO · 5K · 10K
Sat 11/21Feed Your Soul Turkey Trot 5KWheat Ridge, CO · 5K
Sat 11/21Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 11/21South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Thu 11/26Broomfield Turkey Day 5K/10KBroomfield, CO · 10K · 5K · Other
Thu 11/26WP Elite Turkey Trot and RuckWoodland Park, CO · 10K · 5K
Thu 11/26Alpine Bank Boulder Thanksgiving Day 5KBoulder, CO · 5K · Other
Thu 11/26Gobble Wobble Run 2026Littleton, CO · 5K
Thu 11/26YMCA Turkey Trot 5K presented by Corwin HondaColorado Springs, CO · 5K · Other
Thu 11/26AdventHealth Avista Louisville Turkey TrotLouisville, CO · 5K
Thu 11/26NCMC Turkey TrotGreeley, CO · 5K · 1 Mile
Thu 11/262026 Loveland Turkey TrotLoveland, CO · 5K
Thu 11/26Pelican Lakes Turkey TrotWindsor, CO · 5K
Thu 11/26YMCA of Pueblo Turkey TrotPueblo, CO · 5K
Thu 11/26Buena Vista Turkey Trot 5K & Family Fun RunBuena Vista, CO · 1 Mile · 5K
Thu 11/26Parker Parks and Recreation Turkey Day 5K FUN Run/WalkParker, CO · 5K
Sat 11/28Coffee Lovers Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 11/28Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 11/28Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 11/28South Boulder Creek parkrunSouth Boulder Creek, CO · 5K

December 2026

Sat 12/5All-Out Fa La LaWestminster, CO · Half Marathon · 10K · 5K
Sat 12/5Candy Cane Course - Colorado SpringsColorado Springs, CO · Other · 1 Mile · 5K · 10K
Sat 12/5Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law GroupColorado Springs, CO · 5K · 10K · Other
Sat 12/5Toy DropLoveland, CO · 5K · 10K · Other
Sat 12/5Run with the Buffalo Fun Run: 5K DistanceCommerce City, CO · 5K
Sat 12/5Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 12/5South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 12/6Candy Cane Course - DenverWestminster, CO · 1 Mile · 5K · 10K · Other
Sun 12/6Rock Canyon Half Marathon- 40th Anniversary Run!Pueblo, CO · Half Marathon · 5K
Sat 12/12Run for Breast Cancer 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 12/12Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 12/12Santa Catch 5k & 10kWindsor, CO · 5K · 10K · 1 Mile
Sat 12/12YMCA Jingle Jog 5K presented by Corwin HondaFountain, CO · 5K · 1 Mile
Sat 12/12WinterFest 5k & Fun RunThornton, CO · 5K · Other
Sat 12/12Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 12/12South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 12/132026 Jingle Bell Run - ColoradoDenver, CO · 5K · 1 Mile · Other
Sat 12/19Santa's Dash for Ca$hDenver, CO · 5K
Sat 12/19Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 12/19South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 12/20Ugly Sweater 5KDenver, CO · 5K
Sat 12/26A Merry Christmas Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 12/26New Year's Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 12/26Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 12/26South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Thu 12/31Resolution Run - Fort CollinsFort Collins, CO · 5K
Thu 12/31Hands & Voices New Year Virtual 5K: Trails to the SummitBoulder, CO · 5K

January 2027

Fri 1/1Resolute Runner 5kArvada, CO · 5K
Sat 1/2YMCA of Pueblo Hot Chocolate 5KPueblo, CO · 5K
Sat 1/2Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 1/2South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 1/9All-Out Polar ProwlArvada, CO · Half Marathon · 10K · 5K
Sat 1/9Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 1/9South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 1/16MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 1/16Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 1/16Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 1/16South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 1/23Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 1/23South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 1/30Alley LoopCrested Butte, CO · Marathon · Half Marathon · 10K · 5K · Other
Sat 1/30Coffee Lover Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 1/30Run for Donut DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 1/30Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 1/30South Boulder Creek parkrunSouth Boulder Creek, CO · 5K

February 2027

Sat 2/6All-Out Mardi CrawlArvada, CO · Half Marathon · 10K · 5K
Sat 2/6Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 2/6South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 2/13Run for Chocolate 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 2/13Valentine's Day Run 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 2/13Heart Throb 5kArvada, CO · 5K
Sat 2/13Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 2/13South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 2/14The Toyota Super Half Marathon™& Game Day 5K™Colorado Springs, CO · Half Marathon · 5K
Sat 2/20Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 2/20South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 2/27Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 2/27South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 2/28Highlands Ranch 5kHighlands Ranch, CO · 5K

March 2027

Sat 3/6Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 3/6South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 3/13Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 3/13South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 3/14Lucky Brew Race 5K, 10K, 15k & Half MarathonSeverance, CO · 5K · 10K · Other · Half Marathon
Sat 3/20Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 3/20Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 3/20South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 3/21All-Out Spring FeverGolden, CO · Half Marathon · 10K · 5K
Sat 3/27Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 3/27South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 3/28Central Park 5kDenver, CO · 5K

April 2027

Sat 4/3Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 4/3South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 4/4Donut DashDenver, CO · 5K
Sat 4/10Run for Bagels 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 4/10Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 4/10South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 4/11Platte River Half-Marathon, Relay & 5kLittleton, CO · Half Marathon · 5K
Sat 4/17Rattler Trail RaceColorado Springs, CO · 50K · Other · 10K · 5K
Sat 4/17Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 4/17South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 4/182027 Elevate Kids Fun RunGrand Junction, CO · 10K · 5K · 1 Mile
Sat 4/24Coffee Lover Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile
Sat 4/24All-Out Beat the HeatWestminster, CO · Half Marathon · 10K · 5K
Sat 4/24Bigfoot Half MarathonEstes Park, CO · Half Marathon · 5K
Sat 4/24Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 4/24South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 4/25Unicorn 5k (Denver-East)Denver, CO · 5K

May 2027

Sat 5/1Take 5 in the GardenColorado Springs, CO · Other · 5K
Sat 5/1Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 5/1South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 5/2The Colorado MarathonFort Collins, CO · Marathon · Half Marathon · 10K · 5K
Sun 5/2Emerge 5KBoulder, CO · 5K
Sat 5/8Colterris Wine Run 5kPalisade, CO · 5K
Sat 5/8Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 5/8South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 5/9Colorado Women's Classic - WestminsterWestminster, CO · 5K · 10K · Other
Sun 5/9Denver Mother's Day 5KDenver, CO · 5K
Sat 5/15Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 5/15South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 5/22Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 5/22South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 5/29Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 5/29South Boulder Creek parkrunSouth Boulder Creek, CO · 5K

June 2027

Sat 6/5Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 6/5South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sun 6/6Colorado 13er (Half Marathon/10k/5k)Louisville, CO · Half Marathon · 10K · 5K
Sun 6/6Flamingo Day 5KDenver, CO · 5K
Sat 6/12All-Out Summer BreezeArvada, CO · Half Marathon · 10K · 5K
Sat 6/12Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 6/12South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 6/19Unicorn 5k (North)Thornton, CO · 5K · Other
Sat 6/19Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 6/19South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 6/26Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 6/26South Boulder Creek parkrunSouth Boulder Creek, CO · 5K

July 2027

Sat 7/3Red, White, and WARRIOR 5KGrand Junction, CO · 5K · Other
Sat 7/3Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 7/3South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 7/10All-Out Dog DaysWestminster, CO · Half Marathon · 10K · 5K
Sat 7/10Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 7/10South Boulder Creek parkrunSouth Boulder Creek, CO · 5K
Sat 7/17Summer Splash Prairie Dog Half, 10k, & 5kCastle Rock, CO · Half Marathon · 10K · 5K
Sat 7/17Aspen parkrunAspen Recreation Centre, CO · 5K
Sat 7/17South Boulder Creek parkrunSouth Boulder Creek, CO · 5K

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