Cam Zink successfully landed a 100-foot dirt-to-dirt mountain bike backflip to set a new Guinness World Record at Mammoth Mountain on Aug. 21, 2014.
Cam Zink successfully landed a 100-foot dirt-to-dirt mountain bike backflip to set a new Guinness World Record at Mammoth Mountain on Aug. 21, 2014.
Get the latest snow and mountain lifestyle news and entertainment delivered to your inbox.