In class sessions of up to 40 people, drivers learn to handle go-karts that zip at speeds up to 50 mph

2011 NL West champs seek to trounce the visiting Houston Astros in a three-game weekend series

Drivers whiz around half-mile track inside Indy-style go-karts and enjoy all-day access to game room activities

Guides and rafters careen down the cliff-lined Class III and Class III+ rapids of the American River

Young talents such as Josh Reddick, Yoenis Cespedes, and All-Star pitcher Ryan Cook lead the charge against the Yankees, Red Sox & Indians

Buses shuttle sightseers from downtown Las Vegas to national forest and panoramic views of Grand Canyon before stop at Frontier Movie Town

Boats carry up to eight passengers across Alamitos Bay or canals as they plug in iPods and sip drinks from a cooler

Players engage in Nerf-dart battles at indoor tactical field

Runners face 5K course of hills, muddy pits, and dirt paths before celebrating with medals and beer

Professional captains help riders float high above the Emerald Coast with parasail wings attached to boat with sturdy towline