/** Visit Denver Hotel Script **/ The 20 Best Colorado Running Races of 2020 - Denver Colfax Marathon
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In the Press

The 20 Best Colorado Running Races of 2020

Colfax Marathon listed as one of the 20 Best Colorado Running Races of 2020 in the Denver Post.

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