Run the Colfax Marathon:
Denver’s Marathon

This is your year to run the Marathon: 26.2 epic miles at 5280’ altitude – and zero attitude.

It’s the Ultimate Urban Tour of Denver.  Start and finish in Denver’s City Park. Run through Mile High Stadium – home of the Denver Broncos – twice! Run through Denver Fire Station #1, along seven miles of rivers, lakes and bridges – including Sloan’s Lake. Race through eclectic neighborhoods, historic Lakewood, the bustle of Colfax Avenue, and downtown Denver – with views of the majestic Rocky Mountains!

26.2 miles at 5,280 feet elevation? This is one for the bucket list. The Colfax Marathon is a Boston Marathon qualifier race.

Virtual Photo Tour

Cruise to the bottom of the page and take the virtual photo tour to view the fun sites along the course!

Runner Perks

Great tech shirts, car decals, and awesome finisher medals for each runner with detachable mini-medallions for your keychain or necklace. Free runner tracking and digital on-course photo!  The 2017 medals were a standing desk toy that spins. Don’t miss the awesome afterparty and Michelob Ultra Beer Garden lakeside in City Park.

Colfax Double Marathon Challenge

Run a FULL marathon January 1, 2018 to May 19, 2018 then run the marathon at Colfax and get a great adidas gift.   Learn more


Set a new event record, win $1,000. Set a new state record, win an additional $1,000. See the times to beat. Age group awards are great keepsakes! Overall and masters awards are based on gun time (1st, 2nd, 3rd). Age group awards are by chip time (1st, 2nd, 3rd) in categories: 19 & under, 20-29, 30-39, 40-49, 50-59, 60-69, 70+.

Run for Charity

Run for one of the largest Charity Partner programs in the country! Over 210 charities are participating this year. Choose a charity to run for when you register and they will contact you.

Training & Runs

Announcing the Colfax Training Series! Our Colfax Marathon Ambassadors will join Featured Running Clubs and running stores with Colfax drawings for great schwag. Check the TRAINING section for the up-to-date calendar – and great training tips.

Packet Pick Up & Race Day Logistics

Pick up Race Packets Friday and Saturday, May 18-19, 2018 at the Health & Fitness Expo. No Race Day Packet Pick Up. Detailed race day logistics will be posted in April.

Photo Tour

Hover over each photo to learn fun facts!

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