March 2 The first KILIMANJARO MARATHON kicks off in Moshi, Tanzania, with local and international runners following a 26.1-mile loop in the shadow of Africa's highest mountain. If you're really fast, you can catch the ANTARCTICA MARATHON the next day; it winds around four research stations on King George Island, off the Antarctic Peninsula. www.kilimanjaromarathon.com; www.marathontour.com

March 8-10 Sharpen your toe points and head to the ICE CLIMBING WORLD CHAMPIONSHIPS in Kirov, Russia, where the best winter climbers will take part in competitions judged on speed and difficulty. www.ice-time.com

March 9-16 The European road-biking season begins with the 740-mile PARIS-NICE. Racer to watch: Lance Armstrong, who plans to use this weeklong event as a Tour tune-up.

March 24-30 Meet the next undiscovered Ross Powers at Maine's Sunday River ski resort, which will host 1,100 amateur snowboarders from across the country for slalom, slopestyle, boardercross, giant slalom, and halfpipe competitions at the USASA NATIONAL SNOWBOARDING CHAMPIONSHIPS. www.usasa.org

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