The Grossglockner Ultra-Trail (GGUT 110) is a 110 km trail race held in July in Salzburg province, Austria. The course gains 6,500 m over 110 km (59.1 m/km), starting at 9:30 pm on a Friday from Kaprun and circumnavigating the Grossglockner — Austria's highest mountain at 3,798 m — through the Hohe Tauern National Park. Entry costs €220 (until May 31, 2026), equivalent to €2.00 per kilometre. The race sells out each year.
The longest descent drops 1,792 m over 17.4 km — the 6th largest single descent of 386 European trail distances in the DTR database. The distance-weighted average uphill gradient of 17.3% ranks 23rd steepest of 390 European distances — meaning nearly 9 in 10 European trail races are less steep on uphills. The route crosses 3 federal states, 7 valleys, and passes 14 glaciers. Over half the course runs above 2,000 m. Nearest airport is Salzburg (SZG), 81 minutes by car.
First run in 2015, the North Face-sponsored GGUT carries 5 ITRA points and qualifies for the Western States 100 lottery with finishes under 28 hours. Maximum field is 500 runners. It suits qualified trail runners prepared for serious alpine attrition — the 2025 edition was abandoned mid-race due to bad weather.