RacerTV captures the opening round of the 2012 Can-Am Grand National Cross Country Series where defending champion Charlie Mullins and former '09 champ Paul Whibley literally race themselves into sheer exhaustion in the final minutes of an intense 3-hour battle through the whooped-out sandy woods of the Westgate River Ranch Resort. Watch as the fastest off-road motorcycle racers in the world kick off an exciting season of GNCC Racing in southern Florida!

WATCH THIS EPIC EVENT SUNDAY AT 4:30 PM ET ON NBC SPORTS NETWORK