What is "mountainman"

The Mountainman is a single stage mountain ultramarathon in Switzerland.
The distance is approximately 80 km, with a total elevation gain of 5.000 m. It is widely regarded as the most difficult foot race in Switzerland and belongs to the most difficult races in Europe.
For the first time, the race was held in late August 2010 by the Association BergArena" and held annually in August.