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The Wonderland Trail gains and loses more than 22,000 feet in elevation over 93 miles, but for Allison Macsas, 32, and Mallory Brooks, 33, it took them just 29 hours to circumnavigate Mount Rainier. The previous mark, set in 2012, was held by Candice Burt (31 hours, 11 minutes, 56 seconds).