The Mark Webber Pure Tasmania Challenge is a 250km endurance event consisting of mountain bike riding, kayaking and trekking on the Australian island.

BBC: Webber targets return in February

The accident happened south-east of state capital Hobart on Saturday, while Webber was taking part in the Mark Webber Pure Tasmania Challenge - a 250km endurance event consisting of mountain bike riding, kayaking and trekking on the Australian island.

BBC: Webber breaks leg in bike crash

"The more you know your teammates, the less likely you are to take comments made in the midst of sleep deprivation personally, " says Sara Ballantyne, 38, a professional mountain-bike racer who helped lead Team Vail to victory in last year's Eco-Challenge in Morocco.

FORBES: Hypothermia for Fun and Profit