/** Visit Denver Hotel Script **/ Denver's Biggest Running Weekend - Denver Colfax Marathon
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In the Press

Denver’s Biggest Running Weekend

Check out Denver Colfax Marathon CEO, Andrea Dowdy on Colorado and Company!

Read the Article

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

Be a part of Marathon Weekend.  May 15-17, 2026

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