Mountain bikes speed past in a blur along a Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

Mountain bikers take a rest on an Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

A mountain biker takes a rest on an Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

Mountain biking along a Enduro style single track trail in the Nepal Himalayas near the Langtang region, Nepal, Asia

Australia Safari Rally 2007, start, Enduro motorcycle, outback, Western Australia, WA, Australia

Enduro motorcycle in the morning light on the bank of Maori Lake, South Island, New Zealand

Enduro motorcycle by the roadside, Turtagro, Norway, Scandinavia, Europe

Mountain bikers at sunset, Carezza, Latemar, Trentino-AltoAdige, Dolomites, Italy, Europe

Mountain bikers in action, Carezza, Latemar, Trentino-AltoAdige, Dolomites, Italy, Europe

Mountain bikers at sunset, Carezza, Latemar, Trentino-AltoAdige, Dolomites, Italy, Europe

A motorcyclist catches air on a jump during an Enduro race in Maplesville, Alabama. (Back lit, Lens Flare, Motion Blur)

A motorcyclist rides through the brush in an Enduro race in Maplesville, Alabama. (Motion Blur)