Rankings · updated September 7, 2026

Best Races in Colorado

Ranked by composite score from public signals — no pay-to-play, ever. How scoring works →

Composite /100 · FLD field · HST history · CRD credentials · CHR character

  1. 1 Bolder Boulder 10K Boulder, CO May 2027 USATF 83.7/100
  2. 2 Quad Rock 50 Fort Collins, CO May 2027 54.2/100
  3. 3 20th Annual Golden Gallop Golden, CO Sep 2026 49.9/100

Longest-running in Colorado

4 races we can date but haven't measured enough of to score. Oldest first. What we measure →

  1. 1 53rd Annual Imogene Pass Run Telluride, CO Sep 2026 1974 52 years running
  2. 2 25th Annual Black Canyon Triathlon Montrose, CO Sep 2026 2002 24 years running
  3. 3 22nd Annual Run Through Time Trail Marathon and Half Marathon Salida, CO Mar 2027 2006 20 years running
  4. 4 14th Annual Superhero Event Greeley, CO Sep 2026 2013 13 years running

Also listed, not yet ranked

106 races we list but haven't measured enough of to score. By date. What we measure →

  1. 2026 Lake Nighthorse Triathlon - Sprint and Olympic Durango, CO Sep 2026 Not yet rankedno verified data
  2. 4th Highland Homecoming 5k Run & Walk Ault, CO Sep 2026 Not yet rankedno verified data
  3. 6 Dot Dash Littleton, CO Sep 2026 Not yet rankedno verified data
  4. 9/11 Heroes Virtual Run Colorado Springs, CO Sep 2026 Not yet rankedno verified data
  5. Black Squirrel Half Marathon Bellvue, CO Sep 2026 Not yet rankedno verified data
  6. 31st El Grito 5k (2026) Denver, CO Sep 2026 Not yet rankedno verified data
  7. 9/11 Heroes Run - Denver, Colorado Denver, CO Sep 2026 Not yet rankedno verified data
  8. Buffalo Bicycle Classic Boulder, CO Sep 2026 Not yet rankedno verified data
  9. Colorado Run for the Fallen Run/Walk/Ruck Palmer Lake, CO Sep 2026 Not yet rankedno verified data
  10. 2026 WMBA End of Season.... TOGA Party!! Colorado Springs, CO Sep 2026 Not yet rankedno verified data
  11. 2026 ColorFest Color Run/Walk 5K Pagosa Springs, CO Sep 2026 Not yet rankedno verified data
  12. 2026 Montbello Alive! 5K Denver, CO Sep 2026 Not yet rankedno verified data
  13. All-Out Fall Fest Westminster, CO Sep 2026 Not yet rankedno verified data
  14. Autumn Run Buena Vista, CO Sep 2026 Not yet rankedno verified data
  15. Battle by the Brook Deckers, CO Sep 2026 Not yet rankedno verified data
  16. Beulah Challenge and OverIt Series Beulah, CO Sep 2026 Not yet rankedno verified data
  17. CEROX + IRON + IRON X Frederick, CO Sep 2026 Not yet rankedno verified data
  18. Champions for Children 5K Run/Walk + Fun Run Commerce City, CO Sep 2026 Not yet rankedno verified data
  19. Denver: Walk With Autism and Resource Fair Denver, CO Sep 2026 Not yet rankedno verified data
  20. Chile & Frijole Hot to Trot 5K & 10K Pueblo, CO Sep 2026 Not yet rankedno verified data
  21. Connection 5k CARBONDALE, CO Sep 2026 Not yet rankedno verified data
  22. CG Adventure Club - Elevation Everest Winter Park, CO Sep 2026 Not yet rankedno verified data
  23. 2026 Skate for Chicken Colorado Springs, CO Sep 2026 Not yet rankedno verified data
  24. Boggy Draw Bear Chase Dolores, CO Sep 2026 Not yet rankedno verified data
  25. 2026 Suicide Prevention Color Walk/Run Center, CO Sep 2026 Not yet rankedno verified data
  26. Bayfield Heritage Days 5k Bayfield, CO Sep 2026 Not yet rankedno verified data
  27. Denver Rotary Club Cycling to Serve 2026 Denver, CO Sep 2026 Not yet rankedno verified data
  28. 14er Fest 14K & 5K Buena Vista, CO Sep 2026 Not yet rankedno verified data
  29. Colorado Coyotes Youth XC Invitational Cenennial, CO Sep 2026 Not yet rankedno verified data
  30. Damillion's Run For HOPE! Any City - Any State, CO Sep 2026 Not yet rankedno verified data
  31. Big Waves Family Superhero 5K run/walk Westminster, CO Oct 2026 Not yet rankedno verified data
  32. Colorado Springs Marathon, Half, 5K, and Kids K Colorado Springs, CO Oct 2026 Not yet rankedno verified data
  33. Emerald Mountain Trail Run Steamboat Springs, CO Oct 2026 Not yet rankedno verified data
  34. ASDAsh 5K to Beat Tooth Decay Aurora, CO Oct 2026 Not yet rankedno verified data
  35. Breckenridge RunFest Breckenridge, CO Oct 2026 Not yet rankedno verified data
  36. Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Oct 2026 Not yet rankedno verified data
  37. Cookie Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Oct 2026 Not yet rankedno verified data
  38. Dialysis Dash 5K- Canceled Grand Junction, CO Oct 2026 Not yet rankedno verified data
  39. Durango Marathon Durango, CO Oct 2026 Not yet rankedno verified data
  40. EDT XC Showdown Aurora, CO Oct 2026 Not yet rankedno verified data
  41. A2A Hero Run/Walk 5K Pueblo, CO Oct 2026 Not yet rankedno verified data
  42. Beti Bike Bash Elbert, CO Oct 2026 Not yet rankedno verified data
  43. Blue Sky Trail Marathon & Half Marathon Fort Collins, CO Oct 2026 Not yet rankedno verified data
  44. Chili Chase Durango, CO Oct 2026 Not yet rankedno verified data
  45. DU Crimson Classic 5K Run/1.5 Mile Walk Denver, CO Oct 2026 Not yet rankedno verified data
  46. Apex Foundation Trick or Trot 5K & Halloween Hunt Powered by REP Fitness Arvada, CO Oct 2026 Not yet rankedno verified data
  47. All-Out Kooky-Spooky Golden, CO Nov 2026 Not yet rankedno verified data
  48. 12th edition Sole Mates 5k & Brew Fest presented by Shoes & Brews and Left Hand Brewing Longmont, CO Nov 2026 Not yet rankedno verified data
  49. Alamosa Veterans Memorial Park Race Alamosa, CO Nov 2026 Not yet rankedno verified data
  50. Bell Ringer 2 Miler Loveland, CO Nov 2026 Not yet rankedno verified data
  51. Break a Leg 5k Grand Junction, CO Nov 2026 Not yet rankedno verified data
  52. City Park Classic (5k/10k & 1 Mile Walk of Hope for Pancreatic Cancer Research) Denver, CO Nov 2026 Not yet rankedno verified data
  53. Colorado 24 Hour Run Fort Collins, CO Nov 2026 Not yet rankedno verified data
  54. Canya Cañon Trail Race & Hike Colorado Springs, CO Nov 2026 Not yet rankedno verified data
  55. Colorado Springs Veterans Day 5k Colorado Springs, CO Nov 2026 Not yet rankedno verified data
  56. Colorado State Youth Cross Country Championships Aurora, CO Nov 2026 Not yet rankedno verified data
  57. Denver Veterans Day Run Denver, CO Nov 2026 Not yet rankedno verified data
  58. Chase the Glow Estes Park, CO Nov 2026 Not yet rankedno verified data
  59. 2026 Loveland Turkey Trot Loveland, CO Nov 2026 Not yet rankedno verified data
  60. AdventHealth Avista Louisville Turkey Trot Louisville, CO Nov 2026 Not yet rankedno verified data
  61. Alpine Bank Boulder Thanksgiving Day 5K Boulder, CO Nov 2026 Not yet rankedno verified data
  62. Broomfield Turkey Day 5K/10K Broomfield, CO Nov 2026 Not yet rankedno verified data
  63. Buena Vista Turkey Trot 5K & Family Fun Run Buena Vista, CO Nov 2026 Not yet rankedno verified data
  64. Durango Turkey Trot presented by Animas Surgical Hospital Durango, CO Nov 2026 Not yet rankedno verified data
  65. Christmas Mountain 5 Mile Run Salida, CO Nov 2026 Not yet rankedno verified data
  66. Coffee Lovers Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Nov 2026 Not yet rankedno verified data
  67. 2026 Summit for Life Aspen, CO Dec 2026 Not yet rankedno verified data
  68. All-Out Fa La La Westminster, CO Dec 2026 Not yet rankedno verified data
  69. Candy Cane Course - Colorado Springs Colorado Springs, CO Dec 2026 Not yet rankedno verified data
  70. Chasing Santa 5k/Cycling Santa Toy Drive Presented by: Springs Law Group Colorado Springs, CO Dec 2026 Not yet rankedno verified data
  71. Candy Cane Course - Denver Westminster, CO Dec 2026 Not yet rankedno verified data
  72. 2026 Jingle Bell Run - Colorado Denver, CO Dec 2026 Not yet rankedno verified data
  73. A Merry Christmas Run 5K/10K/13.1 DENVER/AURORA Centennial, CO Dec 2026 Not yet rankedno verified data
  74. All-Out Polar Prowl Arvada, CO Jan 2027 Not yet rankedno verified data
  75. ALMAGEDDON Winter Triathlon presented by the Alma Foundation Alma, CO Jan 2027 Not yet rankedno verified data
  76. Colorado Cold Snap Louisville, CO Jan 2027 Not yet rankedno verified data
  77. Chilly Willy 5K/10K/Half Marathon - Colorado Springs Colorado Springs, CO Jan 2027 Not yet rankedno verified data
  78. Alley Loop Crested Butte, CO Jan 2027 Not yet rankedno verified data
  79. Coffee Lover Run DENVER/AURORA Centennial, CO Jan 2027 Not yet rankedno verified data
  80. All-Out Mardi Crawl Arvada, CO Feb 2027 Not yet rankedno verified data
  81. Chilly Cheeks Duathlon Englewood, CO Feb 2027 Not yet rankedno verified data
  82. All-Out Spring Fever Golden, CO Mar 2027 Not yet rankedno verified data
  83. Always Hope Easter Run DENVER/AURORA Centennial, CO Mar 2027 Not yet rankedno verified data
  84. Central Park 5k Denver, CO Mar 2027 Not yet rankedno verified data
  85. Donut Dash Denver, CO Apr 2027 Not yet rankedno verified data
  86. All-Out Beat the Heat Westminster, CO Apr 2027 Not yet rankedno verified data
  87. Bigfoot Half Marathon Estes Park, CO Apr 2027 Not yet rankedno verified data
  88. Coffee Lover Run DENVER/AURORA Centennial, CO Apr 2027 Not yet rankedno verified data
  89. DoNot Stop Half Marathon/5K/10K - Colorado Springs Colorado Springs, CO Apr 2027 Not yet rankedno verified data
  90. DoNot Stop Half Marathon/5K/10K - Denver Denver, CO Apr 2027 Not yet rankedno verified data
  91. 18 Hours of Fruita Loma, CO May 2027 Not yet rankedno verified data
  92. Emerge 5K Boulder, CO May 2027 Not yet rankedno verified data
  93. Colterris Wine Run 5k Palisade, CO May 2027 Not yet rankedno verified data
  94. Colorado Women's Classic - Westminster Westminster, CO May 2027 Not yet rankedno verified data
  95. Denver Mother's Day 5K Denver, CO May 2027 Not yet rankedno verified data
  96. Endure Trail Runs Divide, CO May 2027 Not yet rankedno verified data
  97. Colorado 13er (Half Marathon/10k/5k) Louisville, CO Jun 2027 Not yet rankedno verified data
  98. All-Out Summer Breeze Arvada, CO Jun 2027 Not yet rankedno verified data
  99. Alpha 5K Challenge Boulder, CO Jun 2027 Not yet rankedno verified data
  100. All-Out Dog Days Westminster, CO Jul 2027 Not yet rankedno verified data
  101. Cookie Chase Denver, CO Jul 2027 Not yet rankedno verified data
  102. Eat. Run. Adopt. 10K Berthoud, CO Jul 2027 Not yet rankedno verified data
  103. Bound for Boston Marathon & Half Marathon - Denver Denver, CO Aug 2027 Not yet rankedno verified data
  104. All-Out Runapalooza Arvada, CO Aug 2027 Not yet rankedno verified data
  105. Dog Days of Summer Longmont, CO Aug 2027 Not yet rankedno verified data
  106. Byers Peak Stampede Half Marathon & 5K Run Fraser, CO Aug 2027 Not yet rankedno verified data

Races worth traveling for

Twice a month: the races our data says are worth the trip — picked by the numbers, never pay-to-play. Plus a heads-up when your race's week arrives. One-click unsubscribe, always.