Tour du Colorado
In 2011 the USA Pro Cycling Challenge bicycle race around Colorado was held for the first time. A stage from Gunnison to Aspen was routed over both Cottonwood and Independence passes. Spectators were allowed to camp at the pass; their impact on the pass's environment led to a ban on camping within 10 miles (16 km) of it for the following year's event. The Forest Service posted signs reminding spectators at the pass of the fragility of the surrounding tundra