10K races in Colorado
114 upcoming 10K races in Colorado, with dates and field depth before you enter.
October 2026
- Sat, Oct 31Eerie ErieErie5K10K
- Sat, Oct 31Spooky SprintColorado Springs5K10K
- Sat, Oct 31Halloween Trick or Trot Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Oct 31PB&J Fuel Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Oct 31Spooky Sprint - Colorado SpringsColorado Springs5K10KHalf marathon Local
November 2026
- Sun, Nov 1Feet for Justice RunDenver5K10K
- Sun, Nov 1All-Out Kooky-SpookyGolden5K10KHalf marathon
- Sat, Nov 7Turkey Trails- DenverLittleton5K10KHalf marathon Local
- Sat, Nov 7City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research)Denver5K10K Competitive
- Sat, Nov 7Alamosa Veterans Memorial Park RaceAlamosa5K10K
- Sun, Nov 8Turkey TrailsColorado Springs5K10K
- Sun, Nov 8Turkey Trails - Colorado SpringsColorado Springs5K10KHalf marathon Competitive
- Sat, Nov 14Longmont Turkey TrotLongmont10K Very competitive
- Sat, Nov 14Louisville Trail RaceLouisville5K10K
- Sat, Nov 14Run for Mental Health 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Nov 14Veterans Day Freedom Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Nov 14Salute to Veterans 5K/10K/Half Marathon - DenverAurora5K10KHalf marathon
- Sat, Nov 14Denver Veterans Day RunDenver5K10K Competitive
- Sun, Nov 15Salute to Veterans 5K/10K/Half Marathon - Colorado SpringsColorado Springs5K10KHalf marathon
- Sat, Nov 21Colorado Cold RushColorado Springs10KUltra
- Sat, Nov 21TURKEY TREK (13.1, 10k, 5k & 2k)Arvada5K10KHalf marathon Local
- Sat, Nov 21Pumpkin Pie 5K/10KDenver5K10K Competitive
- Sat, Nov 21285 Turkey Trot - 2026Bailey5K10K
- Thu, Nov 26Broomfield Turkey Day 5K/10KBroomfield5K10K Competitive
- Sat, Nov 28Coffee Lovers Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Nov 28Thanksgiving Gobble Trot Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
December 2026
- Sat, Dec 5Candy Cane CourseColorado Springs5K10K
- Sat, Dec 5Candy Cane Course - Colorado SpringsColorado Springs5K10K
- Sat, Dec 5Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law GroupColorado Springs5K10K
- Sat, Dec 5Toy DropLoveland5K10K Competitive
- Sat, Dec 5All-Out Fa La LaWestminster5K10KHalf marathon Local
- Sun, Dec 6Candy Cane Course - DenverWestminster5K10K
- Sat, Dec 12Run for Breast Cancer 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Dec 12Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Dec 12Santa Catch 5k & 10kWindsor5K10K Competitive
- Sat, Dec 26A Merry Christmas Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Dec 26New Year's Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
January 2027
- Fri, Jan 1Rescue RunColorado Springs5K10K
- Sat, Jan 9All-Out Polar ProwlArvada5K10KHalf marathon Local
- Sat, Jan 9Winter Series - The Coolest Race in Town!Colorado Springs5K10K
- Sat, Jan 16MLK Jr. Freedom Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Jan 16Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sun, Jan 17Colorado Cold Rush 5K/10KLouisville5K10K
- Sun, Jan 17Colorado Cold SnapLouisville5K10K Local
- Sat, Jan 23Chilly Willy 5K/10K/Half Marathon - Colorado SpringsColorado Springs5K10KHalf marathon
- Sun, Jan 24Yeti Chase 5k/10kMorrison5K10K
- Sat, Jan 30Coffee Lovers Run DENVER/AURORACentennial5K10KHalf marathon
- Sat, Jan 30Run for Donut DENVER/AURORACentennial5K10KHalf marathon
- Sat, Jan 30Time Travel Half-Marathon/5K/10K - DenverWestminster5K10KHalf marathon Local
- Sun, Jan 31Time Travel Half-Marathon/5K/10K - Colorado SpringsColorado Springs5K10KHalf marathon
February 2027
- Sat, Feb 6Westy Winter Waggle 5&10kWestminster5K10K Local
- Sat, Feb 6All-Out Mardi CrawlArvada5K10KHalf marathon Local
- Sun, Feb 7Stories Trail RunsColorado Springs10KHalf marathon
- Sun, Feb 7Old Man Winter Bike Rally & RunLyons5K10KHalf marathon Very competitive
- Sat, Feb 13Run for Chocolate 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Feb 13Valentine's Day Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Feb 20Winter Series - The Coolest Race in Town!Colorado Springs10K
- Sat, Feb 27Run For Mental Health DENVER/AURORACentennial5K10KHalf marathon
- Sat, Feb 27Run Together Against Breast Cancer DENVER/AURORACentennial5K10KHalf marathon
March 2027
- Sat, Mar 6Time to Paddy 5K/10K & Lucky 13.1 13.1 - DenverDenver5K10KHalf marathon Local
- Sun, Mar 7That Dam RunCherry Creek State Park5K10K
- Sun, Mar 7Time to Paddy 5K/10K and Lucky 13.1Colorado Springs5K10K
- Sun, Mar 7Time to Paddy 5K/10K & Lucky 13.1 - Colorado SpringsColorado Springs5K10KHalf marathon
- Sun, Mar 14Lucky Brew Race 5K, 10K, 15k & Half MarathonSeverance5K10KHalf marathon Competitive
- Wed, Mar 17C.O.P.S. WINTER RACE SERIESGolden10K
- Sat, Mar 20St. Paddy's Day Lucky Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Mar 20Sunrise Marathon 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sun, Mar 21All-Out Spring FeverGolden5K10KHalf marathon Local
- Sat, Mar 27Always Hope Easter Run DENVER/AURORACentennial5K10KHalf marathon
- Sat, Mar 27SuperHeroes Run DENVER/AURORACentennial5K10KHalf marathon
April 2027
- Sat, Apr 10Mountain Ridge Trail RaceHighlands Ranch5K10K
- Sat, Apr 10Run for PB&J 5k/10k/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Apr 10Sloth Run 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sun, Apr 11Spring Fling Prairie Dog Half, 10k, & 5kArvada5K10KHalf marathon Local
- Sat, Apr 17Rattler Trail RaceColorado Springs10KUltra
- Sun, Apr 18Elevate Kids Fun RunGrand Junction5K10K
- Sat, Apr 24Coffee Lovers Run DENVER/AURORACentennial5K10KHalf marathon
- Sat, Apr 24Run for Donut DENVER/AURORACentennial5K10KHalf marathon
- Sat, Apr 24DoNot Stop Half Marathon/5K/10K - Colorado SpringsColorado Springs5K10KHalf marathon
- Sat, Apr 24All-Out Beat the HeatWestminster5K10KHalf marathon Competitive
- Sun, Apr 25DoNot Stop Half Marathon/5K/10K - DenverDenver5K10KHalf marathon
May 2027
- Sun, May 2The Colorado MarathonFort Collins5K10KHalf marathonMarathon Competitive
- Sat, May 8Hometown Half Marathon/5K/10K - Colorado SpringsColorado Springs5K10KHalf marathon
- Sat, May 8Run for Chocolate 5k/10k/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sun, May 9Hometown Half Marathon/5K/10K - DenverDenver5K10KHalf marathon Local
- Sun, May 9Colorado Women's Classic - WestminsterWestminster5K10K
- Sat, May 15Endure Trail RunsDivide10KHalf marathonMarathon
- Sat, May 29SuperHeroes Run DENVER/AURORACentennial5K10KHalf marathon
June 2027
- Sun, Jun 6Colorado 13er (Half Marathon/10k/5k)Louisville5K10KHalf marathon Local
- Sun, Jun 6The Steamboat MarathonSteamboat Springs10KHalf marathonMarathon
- Sat, Jun 12All-Out Summer BreezeArvada5K10KHalf marathon Local
- Sat, Jun 19Run Juneteenth Day 5K/10K/13.1 DENVER/AURORACentennial5K10KHalf marathon
- Sat, Jun 19Treat Trot - DenverDenver5K10K
- Sat, Jun 19Red, White and Brew 5k, 10k & Half MarathonWindsor5K10KHalf marathon
- Sun, Jun 20Treat Trot Colorado SpringsColorado Springs5K10K
- Sun, Jun 20Father's Day Classic 10k, 5k, & 1 MileArvada5K10K Very competitive
July 2027
- Sun, Jul 4Let Freedom Run 5k/10k - LouisvilleLouisville5K10K Competitive
- Sat, Jul 10All-Out Dog DaysWestminster5K10KHalf marathon Local
- Sat, Jul 17Heatwave Half Marathon/5K/10K - DenverDenver5K10KHalf marathon
- Sat, Jul 17Summer Splash Prairie Dog Half, 10k, & 5kCastle Rock5K10KHalf marathon Local
- Sun, Jul 18Heatwave Half Marathon/5K/10K - Colorado SpringsColorado Springs5K10KHalf marathon
- Sat, Jul 31Popsicle 5K/10K/Half - Colorado SpringsColorado Springs5K10KHalf marathon Local
- Sat, Jul 31Eat. Run. Adopt. 10KBerthoud10K
August 2027
September 2027
- Mon, Sep 6Labor Day Half MarathonParker5K10KHalf marathon Local
- Sat, Sep 11Golden Harvest Half Marathon & 5K/10K - DenverDenver5K10KHalf marathon Competitive
- Sun, Sep 12Golden Harvest Half Marathon & 5K/10K - Colorado SpringsColorado Springs5K10KHalf marathon
- Sat, Sep 18All-Out Fall FestWestminster5K10KHalf marathon Competitive
- Sat, Sep 18Autumn RunBuena Vista5K10KHalf marathon