We will start in Retiro. We meet at the "Fuente del Pequeño Tritón", it is on Google Maps. There is an exit of the metro station Retiro right next to it.
1 hour to 3 hours
3 hours 30 minutes
2 hours to 8 hours
3 hours to 7 hours
1 hour 30 minutes
5 hours to 8 hours
1 hour 10 minutes to 1 hour 30 minutes
11 hours to 13 hours
1 hour to 4 hours
45 minutes to 1 hour
12 hours to 13 hours
2 hours 30 minutes
8 hours to 10 hours