The goal was to stay in the aerobic zone and do whole workouts without eating. The plan was to train the metabolism and use more fat from the body for energy.

With the bike it was not so easy to stay aerobic because of 3 mountain climbs

Riding aerobic climbs with your bike rocket is hardly possible, as you write. So it's better to choose flat terrain, which is rather difficult in our area. I would drink the coffee beforehand, after which it inhibits the absorption of minerals. Nice tour and brisk pace! What else was going on while running?