Colfax Marathon
RunGuides Race Facts
Pace Calculator
Video
Race Information
The Colfax Marathon is Denver's largest running weekend. Runners get to pick from the marathon, marathon relay, half marathon, or urban 10 miler and enjoy Denver’s iconic landmarks. Just getting started on the running scene? There's a 5k for that. Finish your 26.2 into a huge post-race party with live music, food, & drinks.
A Boston Marathon qualifier, the Colfax Marathon should be on the bucket list for every runner!
Get a Custom Training Plan for this Run
Receive a FREE training plan from our friends at AI Endurance
Get a FREE AI powered training plan
AI Endurance analyzes your workouts to craft a training plan tailored just for you.
The plan predicts your finishing time and adapts along the way. Just like having your own personal run coach!
Use the button below to learn more and get your training plan.
Find Accommodation Near Colfax Marathon
Use this map to find hotels and airbnb accommodation near this race location.
Pace Calculator
Find your running pace and splits, and learn if you can outrun dangerous animals with the RunGuides run pace calculator.
Registration Info
Many events can only accept a certain number of runners. Register now to guarantee that you secure a spot in this event!
Register NowTell us your race tips
