Spending 12 days alone in the wilderness in the depths of winter might seem crazy, but Jessie Gladish keeps going back for more. In previous years, she skied and walked the 430-mile (688-km) Montane Yukon Arctic Ultra between Whitehorse and Dawson City. This year, though, her biggest challenge yet: to complete the race by fat bike. Trail conditions will dictate how much riding she is able to do, versus pushing her bike through the snow as a glorified luggage cart.
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