One of my big hobbies is running up mountains (as strange as it sounds...). This is certainly not a normal hobby, but there are at least a few thousand people here in switzerland who like to torture their legs and lungs in alpine marathons and other smaller mountain races. It's a whole lot of fun and the scenery is great! Below are some pictures taken from various alpine marathons.

 

The famous Jungfrau Marathon
(42 km and + 1829 m / - 305 m altitude difference)

 

 

LGT Alpine Marathon (in Liechtenstein)
(42 km + 1800 m altitude difference)

 

Graubünden alpine marathon ("the hardest in the world")
(42 km and +2682 m / -402 m altitude difference)

 

Inferno Half-Marathon
(21 km and + 2175 m altitude difference)