Extreme Adventure Biking

For these bikers, potential peril exists in every curve of the road.

A Matter of Fog and Faith

Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Bolivia Adventure Bikers
Guide Alistair Matthew does a quick roadside repair on a flat tire. (Jeffrey Kofman/ ABC News)
Slideshows
ABC News on Facebook