Flagstaff Mountain
Category 25.8 km
Distance
500 m
Elevation Gain
8.6%
Average Gradient
15%
Max Gradient
The defining training climb of Boulder cycling and the most ridden road in Colorado. Starting from the mouth of Chautauqua Park, Flagstaff Road rises 500m over 5.8km at a punishing average of 8.6% — numbers that conceal the true character of the climb. The lower 2km average over 10% through a series...
Pro Tip
The first time at altitude you will lose 10-15% of your sea-level power — expect it and pace accordingly from the bottom. Boulder's KOM scene around Flagstaff is intense; Tuesday and Thursday mornings...