 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 