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May 17-18, 2025
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Colfax Marathon Races
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> Corporate Marathon Relay
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American Trail Runners Association (ATRA)
Home
All Events
Colfax Marathon Races
Colfax Marathon Awards Evening
5K on the Runway
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 Weekend Events
Elite Program – NEW for 2025
2-Day Mile High Challenge
Colfax Double Marathon Challenge
5-10-15 Year Loyal Runners
2025 Official Hotels
Athletes with Disabilities
FAQ for 2025
2025 Ambassador Team
Featured Running Clubs
Colfax Store
Run for a Nonprofit
Race Results
Runner Photos
Charities
Run for a Nonprofit
Charity Partners Program
Our Charity Partners
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
