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Colfax Races

Join us for our 20th year! Click on your race below

 

Marathon

Half Marathon

Urban 10 Miler

Marathon Relay

Open Division

Marathon Relay

GOVERNMENT

Marathon Relay

Schools

Marathon Relay

Corporate

Colfax 5K

 

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