Colorado Cold Rush Ultra

Colorado Cold Rush Ultra, held in Colorado Springs, offers 50K, half marathon, and 10K options. The race is billed as the "coolest" winter running event and features a route starting at Bear Creek Regional Park, climbing High Drive, and threading through tunnels from the Colorado gold rush along Gold Camp Road before a turnaround near Gold Camp and Old Stage Road. The Half Marathon also traverses High Drive, while the 10K stays on 100% dirt trails with mild technical footing on the out-and-back.

Elevations range from about 6,175 to 9,090 feet. Aid stations stock Tailwind, Muir Energy, and warm options at Cheyenne Canon. Visit the organization's website for the most recent information.