Backcounty Ski Racer Embraces the North Shalane Frost has won  pretty much every ultra-distance ski race in Alaska. In March alone this year, she cleaned up in the Homer Epic 100k, the Chena River to Ridge 50-miler, and the 45-mile Tanana River Challenge, closing out the month by defending her title in the White Mountains 100. The 100-mile ski, bike, and footrace is held in the White Mountains National Recreation Area outside Fairbanks, a one-million-acre wilderness whose fairly modest exterior disguises sweeping valleys, jagged limestone mountains, and clear-running creeks, all tied together by groomed trails and 14 public use cabins. In her last two years in the race, Frost has finished first among skiers (women and men) and set a women’s course record at 12 hours 42 minutes. While she won’t deny being ultra-competitive, she says the real draw of racing in Alaska is getting outside, seeing new country, and—every…