It’s no secret that skiers spend a lot of time running as part of their ski training. And even if it’s not their “real” sport, some of them become quite good at it. Hence Scott Patterson wins Alaska’s Crow Pass Crossing backcountry marathon six times (and counting), Erika Flowers takes the victory in The Rut 50k in Montana, or Therese Johaug runs a 10km on the track in 32:20.86 to win the 10,000m at the...