Colorado Cold Rush Ultra
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Event overview
The Colorado Cold Rush Ultra takes place on November 22, 2025, in Colorado Springs, CO, with the start/finish at Bear Creek Regional Park West. Offered distances include:
- 50k
- Half Marathon
- 10k
Registration closes on November 19, 2025. Pack pickup is available at the Colorado Running Company (5262 N. Nevada Ave, #140) and at Bear Creek Regional Park under the largest pavilion. The event lists Muir Energy and Tailwind as sponsors.
Courses and logistics
The 50k is an out-and-back course starting at Bear Creek Regional Park. The route climbs historic High Drive, continues on Gold Camp Road, and turns around where Gold Camp Road meets Old Stage Road. Elevation range is listed as 6,175' to 9,090' with approximately 5,500' of elevation gain. Aid stations on the course are crew accessible in several locations and some offer drop bags. Access to the Gold Stage aid station is via a winding, narrow, and sometimes wash-boarded road; 4WD is recommended and there is a noted probability of snow.
The Half Marathon is also an out-and-back over historic High Drive with about 2,847' of elevation gain. The 10k uses lower-elevation sections of the main course, is 100% dirt trail, and has slight technical footing toward the out-and-back section; its listed elevation gain is about 912'. Aid stations are stocked with Tailwind, Muir Energy gels, snacks, fruit, and soda. Bear Creek Regional Park has ample parking with attendants directing vehicles to the northwest section of the lot. Travel times noted are about 20 minutes from Colorado Springs Municipal Airport and about 90 minutes from Denver International Airport. Visit the organization's website for the most recent information.