Austria’s sports world mourns the loss of Gerhard Gulewicz. The Upper Austrian mountain biker, extreme endurance athlete and motivational trainer died of a heart attack on Saturday at the age of 57 in St. Wolfgang in the Salzkammergut. This was announced by his son Julian Kinzel on Tuesday on Facebook. “The way we knew it, we also want to remember it – always helpful, full of joie de vivre, motivating and never up,” writes Kinzel.