Colorado Marathon


May 4, 2025

Start Time : 6:30 a.m.
Number of Places : 800

The Colorado Marathon used to be known as The Old Town Marathon. It is one of the most successful marathons for Boston Marathon qualification, providing 16-18% of all entrants in recent years.

Colorado Marathon Route
The course follows a point-to-point route that is almost all downhill, providing the opportunity for a good race time.

Runners start from Steven's Gulch Campsite. Following close to the Poudre River the race heads downhill along the road and then bike path. With mountains and forest surroundings on all sides the scenery is stunning. After a final few miles of cheering crowds runners reach the finish in historic Old Town Fort Collins.

Colorado Marathon Entry
* Entry Fee : $120 (until Aug 31), $130 (until Oct 31), $140 (until Dec 31), $160 (until Feb 28), $180 (until Apr 30), $200 (race week)
* Registration Deadline : When the race is full.

Contact Details
Contact : Marathon Office
Address : PO Box 371833, Denver CO, 80237
Email :,
Website :

Further Information
* Boston Qualifier : Yes

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