I started from Almenno San Salvatore at 7:48am and climbed the first long ascent until Passo di Valcava, where the trail 571 crosses a road. I bought one liter of water from a kiosk and continued until the summit of Mount Resegone, where there is Hut Azzoni. Unfortunately, it was lunch time and there was a long line to buy a sandwich, another liter of water and a Coke, I lost some time there.
The following downhill is technical and slow.
I did a small diversion from the trail after about 32km, because the main trail was interrupted, resulting in some hundreds of additional meter to the whole route. I then climbed back and forth the original trail to reach the only source of water until that point.
Exhausted and too low on energy, because I didn't carry enough food, I started to trip and faint, resulting in a miserable slow pace until the end.