From the USA website
Adam Larson (Road Rules 10 - Captain)
Jenna Lewis (Survivor)
Tim Beggy (Road Rules 2)
Ethan Zohn (Survivor: Africa winner)
Four ex-reality TV stars will quickly learn that Eco-Challenge is the "ultimate reality" as they try to survive one of the most brutal endurance race courses ever created. Team member Ethan Zohn may have won Survivor: Africa, but there will be no safety net for him or his wide-eyed teammates in Fiji.