Mountain-Bike 5:00:00 
Checked out the trails I planned to ride with the other guys on May 19/20th: Home-Stein-Waldstatt-Hochamm-Ri. Hemberg-Hochwacht-Ri. Schwägalp-Urnäsch-Waldstatt-Stein-Home, got very hungry after 4 hours ( just carried 3 little bars ), so I couldn't concentrate anymore and had a painful crash with a root. Was totally exhausted when I got home and will a) never ride with an 1:50'000 scale map and b) always take too much food on longer MTB rides.