Denver's Colfax Marathon

26.2 miles. One unforgettable Denver experience 🏁

🏟️ Run through Empower Field
🚒 Race through a fire station
🏔️ Take in mountain views
🌆 See Denver’s best sights
🏅 Chase a Boston Qualifying time

The finish line is calling. Your 2027 Colfax Marathon starts here. 👟

➡️ Register today at RunColfax.org

A few finish line moments we can’t stop thinking about. 🥹🏁 The smiles, the tears, the hugs, the "we actually did it" moments - these are the moments that make every mile worth it.

Register now to get yours: RunColfax.org

It starts with one message…
“Should we run a race together?”

Next thing you know:
✅ Registration complete
✅ Training plans made
✅ Group chat is 500 messages deep
✅ Race day is on the calendar

There’s nothing better than chasing a goal with your crew 😎
Sign up for our Marathon Relay at RunColfax.org > Races > Marathon

Running is more fun when you have people to share the miles with. 🏃‍♀️✨

Whether you're training for your first race or just looking to meet new people, Denver's run club community has a place for you.

Find your crew, lace up, and enjoy the journey together 🤩 Looking for a run club? Check out our list!
https://www.runcolfax.org/runner-info/featured-running-clubs/

5 reasons to run the Denver Colfax 5K 👇

🔥 Chase a PR on a chip-timed course
🔥 Bring the whole crew with our stroller-friendly start wave
🔥 Celebrate with a post-race DJ party
🔥 Experience the energy of Marathon Weekend
🔥 Make race day memories with Denver’s running community

👟 5K Start time: 9:00 AM

Ready to run? Let’s go! 🏃‍♀️💨
➡️ Sign up at RunColfax.org

Every runner knows the feeling…

The moment your shoes hit the pavement and everything starts to shift. 👟

A bad day becomes a little lighter.
A challenge becomes an accomplishment.
A mile becomes a memory.

What’s the biggest thing running has taught you?

What a way to celebrate the 2026 Colfax Marathon community! 🏆

From individual winners to team champions, we celebrated the incredible people who made this year’s race so special. We’re also proud to recognize the $5+ million raised by nonprofits through the Colfax Marathon and the $175,000+ donated to charities each year.

A huge thank you to every runner, volunteer, staff member, sponsor, nonprofit, and supporter who makes this event possible. 💙

26.2 miles. Countless reasons to run the Denver Colfax Marathon!

🏟️ Empower Field
🚒 Fire Station Run-Through
🏔️ Mountain views
🌆 Denver’s best sights
🏅 Boston Qualifier

Your 2027 marathon starts here. 👟 Register today at RunColfax.org

🏙️ 10 miles. Endless Denver views.

Want the Marathon Weekend energy without running 26.2? The Urban 10 Miler is your chance to experience the best of Denver - from Empower Field at Mile High, downtown streets, Confluence, Cherry Creek, and a City Park finish celebration.

Shorter distance. Big race day energy.

➡️ Sign up for the Urban 10 Miler today!
https://www.runcolfax.org/races/urban-10-miler/