Run Denver’s Marathon

It’s the Ultimate Urban Tour of Denver with epic sites.  Start and finish in Denver’s City Park. Run through Empower Stadium at Mile High – 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!

This is one for the bucket list!   The Colfax Marathon is a Boston Marathon qualifier race.

Video and Virtual Photo Tour

Our 30 second video tells all!  Click here to check out the Colfax Marathon.  Cruise to the bottom of the page to take a virtual photo tour of the sites on the course!

Runner Perks, Medal & Shirts

Tech race shirts and awesome finisher medals with detachable mini-medallions for your keychain or necklace.  Free runner tracking and digital on-course photo!  Virtual race bag with great offers. Don’t miss the awesome afterparty and Michelob Ultra Beer Garden lakeside in City Park.

Colfax Double Marathon Challenge

It’s back for the 3rd year!  We are issuing a challenge to all the marathon runners in the world … run a marathon race between Jan 1, 2020  and May 15, 2021 and Denver’s Colfax Marathon!  You get a sweet gift and bragging rights that you can run 26.2 anywhere including Denver at a mile high.  More scoop here Please note:  Races must be timed and in-person, and results must be online.  Virtual races are not eligible.


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 200 charities participated in 2019.  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 before the race 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!