WALTHAM, Mass.–(BUSINESS WIRE)–Last week in the Zollverein Coal Mine Industrial Complex in Essen, Germany, Saucony athletes took off into the night on an unconventional race in the new Saucony Endorphin Pro+. While an impressive, yet technical course that ran through the unique UNESCO World Heritage Site tested the competitors, the Endorphin Pro+ proved itself by helping break a world record and multiple athletes ran away with personal bests. Once one of the largest coal mines from the end of