Started before 6am, before the tour groups usually leave and had the trail basically to myself until Hidroelectrica. After 10am it started to get very hot, luckily there is plenty of water to refill (+filter) from. When I started the last climb, the clouds provided the much needed shade and it stayed like that untill the end. I found the last part along the train tracks the hardest, combined with a lot of tourists going to Aguas Calientes.
10h 50m 34s