Maggie Guterl is the first woman to win the Big's Backyard Ultra, an endurance running race so twisted and extreme it's in a class of its own.
Maggie Guterl is the first woman to win the Big's Backyard Ultra, an endurance running race so twisted and extreme it's in a class of its own.
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Backyard Ultra
Golden woman ran 4-mile loop for 67 hours aiming to be the last