5K Races in Colorado
232 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 232 upcoming 5k races over the next 12 months. Among complete calendar months, November 2026 has the most listed races, with 56. Most are around Denver, Colorado Springs, Centennial. The next one is 4A Region 3 XC STATE Qualifier on October 22 in Northglenn.
- Oct 202631 races
- Nov 202656 races
- Dec 202624 races
- Jan 202719 races
- Feb 202712 races
- Mar 202712 races
- Apr 202717 races
- May 202714 races
- Jun 202711 races
- Jul 202711 races
- Aug 202710 races
- Sep 20279 races
- Oct 20276 races
October 2026
- Thu 10/224A Region 3 XC STATE QualifierNorthglenn, CO · 5K · registration closed · register ↗
- Thu 10/22CHSAA XC Regionals - AuroraAurora, CO · 5K · registration closed · register ↗
- Thu 10/22CHSAA XC Regionals ArvadaArvada, CO · 5K · registration closed · register ↗
- Fri 10/23CHSAA XC Regionals DenverDenver, CO · 5K · registration closed · register ↗
- Fri 10/23Colorado 2A Region 4Mancos, CO · 5K · registration closed · register ↗
- Sat 10/24Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP FitnessArvada, CO · 5K · 1 Mile · from $10 · register ↗
- Sat 10/24Aspen parkrunHerron Park, CO · 5K · every Saturday, 52 dates · 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 10/24Paws for Life Fun Run/Walk 5K - Sponsored by Imperial Memorial GardensPueblo, CO · 5K · register ↗
- Sat 10/24Race to Cure Sarcoma DenverDenver, CO · 5K · 1K · from $10 · register ↗
- Sat 10/24Run Fur Fun 5KFort Collins, CO · 5K · from $20 · registration closed · register ↗
- Sat 10/24South Boulder Creek parkrunSouth Boulder Creek, CO · 5K · every Saturday, 52 dates · 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 Spooky Sprint 5KPueblo, CO · 5K · from $30 · 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 10/25Sporting Chance InitiativeFort Collins, CO · 5K · from $15 · register ↗
- Sun 10/25The 14th Annual Odyssey Odyssey - 2026Denver, CO · 5K · 1 Mile · register ↗
- Sun 10/25The Stride 2026Littleton, CO · 5K · register ↗
- Fri 10/30Fleet Feet Colorado Springs Halloween Fun RunColorado Springs, CO · 5K · register ↗
- Sat 10/31Colleen De Reuck XC ClassicBoulder, CO · 5K · 3K · 1K · from $15 · register ↗
- Sat 10/31EAPL Zombie Run 5KEvergreen, CO · 5K · register ↗
- Sat 10/31Halloween 5K Fundraiser!Grand Junction, 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 · registration closed · 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 · registration closed · register ↗
- Sat 10/31Panda Waddle 5k 15th annualGrand Junction, CO · 5K · register ↗
- Sat 10/31Spooky Sprint - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 10/31Zombie Fun Run 5k & 1mileIdaho Springs, CO · 5K · 1 Mile · from $25 · register ↗
November 2026
- Sun 11/1All-Out Kooky-SpookyGolden, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sun 11/1Fall Series - Get Dirty! Get Muddy!Colorado Springs, CO · 3.8 Miles · 4 Miles · 5.4 Miles · 7.3 Miles · from $39 · register ↗
- Sun 11/1Feet for Justice RunDenver, CO · 10K · 5K · from $35 · register ↗
- Sun 11/1Fossil Creek Park T&H 5KFort Collins, CO · 5K · register ↗
- Sun 11/1Girls on the Run Northern Colorado Fall 5KFort 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 · 1K · from $30 · 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 11/8Dragon Dash 5K Run/WalkDenver, CO · 5K · from $30 · register ↗
- Sun 11/8Turkey Trails - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · Trail · from $17 · register ↗
- Sat 11/14Denver Veterans Day RunDenver, CO · 5K · 10K · from $45 · register ↗
- Sat 11/14Grand Valley Brew RunsGrand Junction, CO · 5K · from $35 · register ↗
- Sat 11/14Leyden Rock Turkey Trot 5KArvada, CO · 5K · from $10 · register ↗
- Sat 11/14Lone Tree Reckoning Heavy 15K and 5KLoveland, CO · 15K · 5K · from $45 · register ↗
- Sat 11/14Louisville Trail RaceLouisville, CO · Half Marathon · 10K · 5K · Trail · register ↗
- Sat 11/14Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 11/14Salute 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 5KDenver, 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 11/21285 Turkey Trot - 2026Bailey, CO · 0.8 Miles · 5K · 10K · from $30 · 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 11/26Fitness Avenue Turkey Trot 5KJohnstown, CO · 5K · 1K · from $20 · register ↗
- Thu 11/26Glenwood Springs Turkey Day 5K & Fun RunGlenwood Springs, CO · 5K · 2K · from $15 · register ↗
- Thu 11/26Gobble Wobble Run 2026Littleton, CO · 5K · from $35 · register ↗
- Thu 11/26Grand Junction Fire Fighters Foundation GJ Turkey TrotGrand Junction, CO · 5K · from $30 · register ↗
- Thu 11/26Harvesting Hope 5kDenver, CO · 5K · from $20 · register ↗
- Thu 11/26NCMC Turkey TrotGreeley, CO · 5K · 2K · from $30 · register ↗
- Thu 11/26Pagosa Turkey Trot 5k Fun Run/WalkPagosa Springs, CO · 5K · from $25 · 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 11/26Steamboat Springs Turkey TrotSteamboat Springs, CO · 5K · from $25 · register ↗
- Thu 11/26The Great Turkey ChaseGolden, CO · 5K · from $15 · register ↗
- Thu 11/26TurCreek Trot 5KGreenwood Village, CO · 5K · from $27 · register ↗
- Thu 11/26Turkey Trot Fun Run/Walk - 5K - Presented by SLV Sports & Wellness & Knee Knockers Bar & GrillAlamosa, CO · 5K · from $10 · register ↗
- Thu 11/26WP Elite Turkey Trot and RuckWoodland Park, CO · 10K · 5K · register ↗
- Thu 11/26Westcliffe Turkey TrotWestcliffe, CO · 5K · from $20 · register ↗
- Thu 11/26Winter Park Turkey Trot 5KWinter Park, CO · 5K · from $30 · 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 · 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 ↗
- Sun 11/29Tiger Trail 5K Run/WalkColorado Springs, CO · 5K · Trail · from $15 · 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 · register ↗
- Sat 12/5Jingle Jog 5k and Fun RunEagle, CO · 5K · from $10 · 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 $16 · 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 1/12027 FAR Resolution (Fun!) RunCañon City, CO · 5K · 10K · register ↗
- Fri 1/1Rescue RunColorado Springs, CO · 5K · 10K · from $30 · register ↗
- Fri 1/1Resolute Runner 5kArvada, CO · 5K · from $39 · register ↗
- Fri 1/1Salida New Year's Day 5KSalida, CO · 5K · from $24 · register ↗
- Sat 1/2YMCA of Pueblo Hot Chocolate 5KPueblo, CO · 5K · from $30 · register ↗
- Sat 1/9All-Out Polar ProwlArvada, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 1/9Sentinel FlurryGolden, CO · 1 Mile · 5K · 4.1 Miles · from $25 · register ↗
- Sat 1/9Winter Series - The Coolest Race in Town!Colorado Springs, CO · 10K · 8 Miles · 10 Mile · 20K · 5K · from $40 · 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 · register ↗
- Sat 1/30Coffee Lover Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 1/30Rio Frio 5kAlamosa, CO · 5K · from $20 · register ↗
- Sat 1/30Run for Donut DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · 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 2/7Old Man Winter Bike Rally & RunLyons, CO · 23 Miles · 40 Miles · 75K · 5K · 10K · from $49 · 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 · 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 3/6Sharin' O' The Green 5kFort Collins, CO · 5K · from $50 · registration closed · register ↗
- 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 ↗
- 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 3/21Central Park 5kDenver, CO · 5K · from $39 · 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 ↗
April 2027
- Sat 4/3Grand Valley Oncology - Life In Color 5KGrand Junction, CO · 5K · from $35 · registration closed · register ↗
- Sun 4/4Donut DashDenver, CO · 5K · from $30 · register ↗
- Sat 4/10Run Through The Decades 6K/7K/8K/Half - Colorado SpringsColorado Springs, CO · 6K · 7K · 8K · Half Marathon · from $35 · registration closed · register ↗
- Sat 4/10Run for PB&J 5k/10k/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · register ↗
- Sat 4/10Sloth Run 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 ↗
- Sun 4/11Spring Fling Prairie Dog Half, 10k, & 5kArvada, CO · Half Marathon · 10K · 5K · from $39 · 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 $30 · register ↗
- Sat 4/24DoNot Stop Half Marathon/5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 4/24SOAR 5KGolden, CO · 5K · 1 Mile · from $20 · 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 5/2Longmont Half & 5k (LM Half)Longmont, CO · Half Marathon · 5K · from $39 · 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 $39 · 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 ↗
- Sat 5/22Farish Trail RaceWoodland Park, CO · Half Marathon · 10K · 5K · 1 Mile · Trail · from $50 · register ↗
- Sat 5/22Run the Spruce 5K and 1K Fun RunPalmer Lake, CO · 5K · 1K · from $20 · register ↗
- Sat 5/29SuperHeroes Run DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · 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 6/125k Race : Summer Sizzle : early birdFort Lupton, CO · 5K · 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 6/19Run Juneteenth Day 5K/10K/13.1 DENVER/AURORACentennial, CO · 5K · 10K · Half Marathon · 1 Mile · from $30 · 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 6/20Father's Day Classic 10k, 5k, & 1 MileArvada, CO · 10K · 5K · 1 Mile · from $12 · 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 · register ↗
- Sat 7/17Summer Splash Prairie Dog Half, 10k, & 5kCastle Rock, CO · Half Marathon · 10K · 5K · from $39 · register ↗
- Sun 7/18Heatwave Half Marathon/5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · 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 · register ↗
- Sat 8/7Unicorn 5k (South)Highlands Ranch, CO · 5K · from $22 · register ↗
- Sun 8/8Summer Sizzler- Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · 15K · from $17 · register ↗
- Sun 8/15Erie Half & 5kErie, CO · Half Marathon · 5K · from $39 · 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 ↗
- Sun 8/22Pioneer Prairie Dog Half, 10k & 5kWestminster, CO · Half Marathon · 10K · 5K · from $39 · register ↗
September 2027
- Mon 9/6Labor Day Half MarathonParker, CO · Half Marathon · 10K · 5K · from $27 · register ↗
- Tue 9/7Spirit of the Valley 5kGrand Junction, CO · 5K · 1K · from $10 · register ↗
- Sat 9/11Break Your Neck: Walk, Run, or RollPueblo, CO · 5K · 10K · registration closed · register ↗
- Sat 9/11Golden Harvest Half Marathon & 5K/10K - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 9/11The Denver 5kDenver, CO · 5K · from $35 · register ↗
- Sun 9/12Golden Harvest Half Marathon & 5K/10K - Colorado SpringsColorado Springs, CO · 1 Mile · 5K · 10K · Half Marathon · from $17 · register ↗
- Sat 9/18All-Out Fall FestWestminster, CO · Half Marathon · 10K · 5K · from $20 · register ↗
- Sat 9/18Autumn RunBuena Vista, CO · Half Marathon · 10K · 5K · from $30 · registration closed · register ↗
- Sat 9/18Marine Memorial 5KArvada, CO · 5K · register ↗
October 2027
- Sat 10/2Colorado Springs Marathon, Half, 5K, and Kids KColorado Springs, CO · Marathon · Half Marathon · 5K · 1K · from $8 · register ↗
- Sat 10/2Spooky Sprint - DenverDenver, CO · 1 Mile · 5K · 10K · Half Marathon · from $20 · register ↗
- Sat 10/2The Extra Mile 5KEnglewood, CO · 5K · from $20 · registration closed · register ↗
- Sat 10/9Manitou 5KManitou Springs, CO · 5K · from $25 · register ↗
- Sun 10/10Westy Half & 5kWestminster, CO · Half Marathon · 5K · from $39 · registration closed · register ↗
- Sun 10/17Running Scared 5K/13K - Colorado SpringsColorado Springs, CO · 5K · 13K · 18K · from $20 · register ↗
Planning a race
- Race day checklistwhat to sort out the night before
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