Jungfrau-Marathon
Race Day Weather
Mild temps, steady conditions
Runners will face temperatures starting at 61°F and climbing to 77°F. With a light breeze from the SE at 7 mph and humidity at 66%, hydration will be crucial. Athletes should consider starting conservatively and adjusting their pace as the day warms up.
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Race Info
The Jungfrau-Marathon starts on the Hoeheweg in Interlaken, Switzerland, and finishes at the Eigergletscher station at 2,320 meters, below the north faces of the Eiger and Moench. The 42.195-kilometer course runs flat along Lake Brienz for the first 10 kilometers before climbing through Wilderswil, Lauterbrunnen and Wengen, gaining about 1,953 meters overall. First run in 1993, it draws roughly 4,000 entrants from more than 30 countries each September and enforces timed checkpoints at Wengen and the Wengernalp-Wixi junction to keep runners ahead of the mountain terrain.
