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Run for a Good Cause

More than 200 nonprofits are participating in the Colfax Marathon to raise funds and awareness for their cause and have fun.

Learn More

 

Two days. Eight races.
Which one will you run?

Be a part of Marathon Weekend.  May 16-18, 2025

Friday

  • Cigna Denver Colfax Marathon Expo

Saturday

  • Cigna Denver Colfax Marathon Expo
  • Colfax 5K

Sunday

  • Marathon
  • Half Marathon
  • Urban 10 Miler
  • Marathon Relay
    • Open Relay
    • Corporate Relay
    • Government Relay
    • Public School Teachers Relay

Register