Aspen Mountain is set to host a new kind of endurance race next month -- to see how many times endurance runners can run up the mountain in 12 hours.
The race is a quirky successor to the former 24 Hours of Aspen. That was a downhill skiing endurance event canceled in 2004.
Instead of competing to complete downhill laps, contestants in the inaugural Red Bull Rise will try to complete the highest number of uphill climbs on the 3-mile course with more than 3,000 vertical feet of climbing. Racers will take the Silver Queen gondola down the mountain.
The Aspen Times reports that competitors will compete in solo, duo and team divisions. The race runs 7 a.m. to 7 p.m. on Sept. 20.