In an age where many high-adrenaline sports have become watered-down exercises in marketing, dirt bike racing remains intensely raw; a dangerous enterprise populated with a colorful, profane cast of daredevils. Theresa Ortolani applies an artist's eye to this unforgiving sport and the riders who pursue it, resulting in an unprecedented, behind-the-scenes window into this punishing competition.

Endurance: Down and Dirty Off-Road Racing offers embedded access to the races, the preparation, and a scope that spans three years worth of WEC, GNCC and Enduro races across the U.S. and Europe. Ortolani traveled thousands of miles to more than 10 events in three different countries, in the process capturing Nathan Kanney's ascent from underdog privateer to KTM factory rider&151;an achievement that required beating world champions riding bikes three times the cost of his.

Endurance features world-champion racers including Juha Salminen, David Knight, Mika Ahola, and Anders Eriksson, with cameo appearances by Travis Pastrana and Carey Hart. Among the interview subjects are Nathan Kanney, Antti Kallonen, Carrie Coombs Russell, Jason Weigandt, Jerry Bernardo, Kailub Russel, Cory Buttrick, and Anders Eriksson.