Picos de Europa National Park offers its visitors a guided-routes service taken by guides/interpreters (free of charge).
From 1 July to 30 September, from Mondays to Fridays (except: 25 July, 15 august y 9 September inAsturias; y 15 august y 9 septembre inCastilla y León).
A different route is offered in each of the four main accesses to the National Park: NW Sector (Lakes of Covadonga), NE Sector (Cabrales-Tresviso), SE Sector (Liébana), and SW Sector (Sajambre-Valdeón). To participate, you can book in advance through the National Parks Reservation Centre, where reservations can be made for each route. Only 20% of the places are accessible without a reservation, arriving to the point of departure at the indicated time. In this case, admission will be in order of arrival until reaching the maximum number of people per route.
A maximum of 15 people per guide is allowed on each route. There might be one or two guides for the routes.
For other organised groups, and outside the summer season, there is a service of guided visits to the visitor centres in the Asturian, Cantabrian, and Leonese sides of the National Park. For information, see contact phone numbers.
Casa Dago (Cangas de Onís): 985848614, Oficina de información de Posada de Valdeón: 987740549 y Centro de Visitantes de Sotama: 942738109.
For school groups, and based on the school calendar, a program of environmental education is available each year, offering different activities suitable to each school grade.