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For pro stair climber, sky's the limit
Lisa Zeigel discovered the sport of stair climbing over a decade ago. Now at age 57, she's one of the best in the world.
2:46 • Source: CNN
Around the World in 8 Races 8 videos
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For pro stair climber, sky's the limit
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Gamer becomes professional obstacle course racer
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For Fit Nation series 7
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Athlete won't let dwarfism stop Ironman dream
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Fit Nation Iron Horse Race 1
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Man on bike races train for Parkinson's cause
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Skiing + man's best friend = skijoring
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Fit Nation Skate Race Image 7
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Long-distance skateboarder breaks world records
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