I tested the SwitchBack 3 Bike Light on a number of mountain bike rides in the Tetons. The trails varied from a paved bike route, to a gravel road, to dirt singletrack. The SwitchBack 3 handled them all. I was very impressed by the brightness and beam distance the high setting provided. The beam on the SwitchBack 3 is very focused, which allows for light far into the distance. That's great for high speed descents and to get noticed by motorists.