Denver's Colfax Marathon

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/

The moment you realized running wasn’t just something you did… it became part of who you are.

Maybe it was signing up for your first race, getting excited about new shoes, or planning your day around a long run.

👇 Finish the sentence:
“I knew I was a runner when…”

We want to hear yours!

What if your next 10 miles took you through the heart of Denver? 🏙️🔥

The Urban 10 Miler lets you run the final stretch of the Colfax Marathon course - from Empower Field at Mile High through downtown, Confluence, Cherry Creek, 17th Ave, and City Park. A later start, an epic route, and a race-day experience like no other.

Are you signing up for the challenge?

👯‍♀️ 26.2 miles is better with friends.

Grab your crew, split the miles, and take on the Colfax Marathon Relay together! Whether it’s your run club, coworkers, family, or a group of friends - this is the perfect way to be part of Marathon Weekend.

Each runner gets:
🏅 Finisher medal
👕 Race shirt
🍺 Post-race beer
🍽️ Lunch
📸 Course photos
…and more!

➡️ Build your team and register today!
https://www.runcolfax.org/races/marathon-relay/

It’s more than just a finish line. 🏁

It’s the miles, the memories, the cheers, and the people who make Colfax unforgettable.

But don’t just take our word for it…

👇 Why do YOU keep coming back to Colfax?

Register at RunColfax.org and join the fun!

🏃‍♀️ A half marathon unlike any other.

Run through Denver’s most iconic spots - from the Capitol and Civic Center Park to Denver Zoo, Fire Station #1, and a finish line party on the lake. 🏙️🎉
This isn’t just 13.1 miles… it’s a Denver experience.

➡️ Save your spot for the Denver Colfax Half Marathon!
https://www.runcolfax.org/races/half-marathon/

A little encouragement can go a long way 🏃

Whether you're training for your first 5K or your next marathon, we hope these reminders give you the motivation to keep moving forward.

💬 Which quote spoke to you the most?

What you need to know about the Denver Colfax Half Marathon 👇

👟 Run through iconic Colfax, past the Capitol, Civic Center Park & 16th Street Mall
🚒 Get high-fives from firefighters at Denver Fire Station #1
🦁 Run past the animals at the Zoo Mile
🏔️ Take in stunning city & mountain views
🎉 Finish in City Park alongside thousands runners!

Firefighters, zoo animals, and an unforgettable finish line - all in one race.

👉https://www.runcolfax.org/races/half-marathon/