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May 15-16, 2027
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Denver 5K on the Runway – 2026
Colfax Marathon Races
Colfax Marathon Awards Evening
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Home
All Events
Denver 5K on the Runway – 2026
Colfax Marathon Races
Colfax Marathon Awards Evening
Colorado Running Hall of Fame
Colorado Running & Walking Event Alliance
Colfax Races
Race Weekend Events
Marathon
Half Marathon
Urban 10 Miler
Marathon Relay – Overview
> Corporate Marathon Relay
> Government Marathon Relay
> Public School Marathon Relay
> Open Marathon Relay
Colfax 5K
Register
Runner Info
Race Results
Runner Photos
Colfax Store
Ambassador Team 2027
Elite Program
2-Day Mile High Challenge
Colfax Double Marathon Challenge
5-10-15-20 Year Loyal Runners
Athletes with Disabilities
Featured Running Clubs
Run for a Nonprofit
Charities
Our Charity Partners
Run for a Nonprofit
Charity Partners Program
Colfax Fly Feet Youth Program
Schools – Raise or Win Money
Charity Partners Login Library
Training
Training App – Runkeeper Go
Tips from our Medical Director
Featured Running Clubs
Training Programs
Sponsors
Sponsorship
Our Sponsors
Volunteer
About
About Us
Latest News
Privacy Policy
Contact Us
Stay Informed
