In the winter, once the lake freezes, it is used for cross country skiing, walking trails, and kitesurfing on snow, with the famous Engadin Skimarathon crossing the lake annually.
There are also special distance ski races, sometimes called ski marathons, like Vasaloppet in Sweden, Birkebeineren in Norway, the Engadin Skimarathon in Switzerland, Gatineau Loppet in Canada, the American Birkebeiner, the Tour of Anchorage in Anchorage, Alaska and the Tug Hill Tourathon in the US.