Boulderthon

Register Race Website Results
Date
Time 7:30 AM
Location Boulder, CO

About the Race

Named Top 5 Best Half Marathons in the US by Active. Stunning course tucked away at the foothills of the Rockies. After nearly tripling in size and selling out, new 8,000 runner cap. Epic Downtown Finish + After Party. Register now!

Race Events

  • 9:00 AM Marathon
  • 6:00 AM Half Marathon
  • 6:00 AM 10K
  • 7:00 AM 5K
  • 7:00 AM Kids Run

For the most up to date information, please visit the race website.