CALUMET, Mich. — Competitors have a new event to choose from for the Great Bear Chase Ski Marathon, March 7, 2015, in Calumet, Michigan, hosted by UP Health System. Race organizers have added a skiathlon event to the lineup. Registration is now open at www.greatbearchase.com. Skiers entering the 50km skiathlon will complete the first 25km using classic technique on the Swedetown Trails race course, change skis in the exchange area in the stadium, and ski the next...