Unterrothorn directissima is a point-to-point ascent that climbs from the town of Zermatt to the summit of Unterrothorn (3,109 m): to mix units of measurement, about 5,000 ft of rise over 6,000 m of run on singletrack trail*. To maximize your climb, start at the bubbling glacial waters of the Matter Vispa, at the Sunneggastrasse bridge. The route may be broken into three main sections: