Martin Rosvall, 32, works full time as an assistant professor of physics at the University of Umeå in northern Sweden. But the constraints of a full time job, work-related travel and conferences are no barriers to stellar marathon performances, Rosvall says. Point in case: In March, he finished 15th overall at the Vasaloppet, the 90 K classic race that attracts more than 20,000 skiers and was Rosvall’s main goal for the season. The legendary race...
