The race then began with a 60-foot rappel down a knob of rock sticking out into the Pacific Ocean.

FORBES: Pain is good

The first rappel was easy, but the second involved going over a roof and traversing quite some distance to regain the anchor.

WSJ: Training for the Big Wall | By Michael J. Ybarra

He promised to be lowered by helicopter to the capitol dome and rappel down the side of the building, and that would sure be something to see.

CNN: Minnesota's excellent Ventura

Costa Rica is an adventurer's paradise -- where else can you rappel waterfalls, hike volcanoes, zip-line through the forest and surf, all within miles of each other?

CNN: Costa Rica's oasis

Then back on the bikes to continue an ordeal that started before dawn with 35 miles of orienteering through mountainous terrain, followed by a rappel down a 250-foot cliff.

FORBES: Hypothermia for Fun and Profit

Ben Yehuda soon lost the ability to rappel.

CNN: SHARE THIS

Chat rooms let readers hash out their favorite ways to cook lobster, behave in a Filipino home or rappel off a cliff, and Ehow gets a 10% to 25% cut of the ads that run nearby.

FORBES: Heloise hits the Web