Last weekend I rode in the 12 hour mountain bike endurance race up near the Royal Gorge Bridge. Each lap was about 10 miles and 1000ft elevation gain. I did 2 laps and out team completed 9 laps total.

https://blossom.primal.net/15d9bdc2bcfc1206a6a8d590b3d4517e2b888823aa9714f3b3ac787c63d10ef5.mp4