Latest News

2024 Sunday Race Shirt Revealed

Your 2024 race shirt for the Marathon, Half Marathon, Urban 10 Miler, and Marathon Relay paying tribute to the neon signs of Colfax! This is a high quality heather black tech shirt…

Colfax Marathon Relay Winner Heading to US Marathon Olympic Trials

DENVER (KDVR) — Colorado is known for its sports enthusiasts and outdoor explorers. But especially in the height of winter, it’s easy to forget that the state often provides the most Olympians per…

Colfax Marathon Record Holder Heading to US Marathon Olympic Trials

DENVER (KDVR) — Colorado is known for its sports enthusiasts and outdoor explorers. But especially in the height of winter, it’s easy to forget that the state often provides the most Olympians per…

2024 Finisher Medals Revealed

Inspiration – we added a stand some years ago as we know as runners that often the medals end up on your closet door handle or in a drawer as they are…

2023 – 13 Days of Giveaways

From December 11 to December 23, we are giving away runner gifts! Everyone that is registered for a 2024 Denver Colfax Marathon race is eligible for that day’s gift. You can see…

2024 Registration Open for Denver Colfax Marathon

DENVER, CO (August 22, 2023) – Registraon is now open for the 2024 Denver Colfax Marathon, presented by Cigna. The city’s only marathon weekend will take place May 17-19, 2024. The first…

2023 Colfax 5K Photo Highlights

We found some Colfax 5K photos to share!  

2023 Photo Highlights

It isn’t easy finding a few of our favorite photos with 21,000 runners, but here are some we like!  

Cigna – Why Employees Run – Erik Harr

Cigna® is proud to be the presenting sponsor of the Denver Colfax Marathon. The Denver Colfax Marathon in the Rocky Mountains is a beautiful location and provides the opportunity to meet athletes…