The annual audi Power of Four is one of the largest ski mountaineering races in the country, challenging top athletes to a grueling 24-mile course with a 10,000-foot vertical climb across all four of our mountains. This coming March will be the 12th year of the race at Aspen Snowmass, and with ski mountaineering making its way to the Olympic stage for the first time in 2026, these PO4 competitors will be ones to watch. #75YearsOfAspenSnowmass (Photo: Jeremy Swanson)