This world-class mountain biking trail shoots riders over the Sierra Buttes and a molar-rattling 4000ft down into Downieville. There are plenty of other scenic biking trails to explore, including Chimney Rock, Empire Creek and Rattlesnake Creek, but this route is the reason why pro-riders arrive in August for the Downieville Classic, a mix of cross-country and downhill racing and revelry.

Local outfitters run hourly shuttles to the start.