The free guided tour from León covers one of the following trails - Chorco de Los Lobos, Llarellampo, El Odrón, Félix de Martino or Colladín Redondo.Check out the official national park page for information regarding the guided tours.Where to stay in the national parkThere are mountain shelters within the park that are open from April to December. If you wish to stay in one then you should reserve well in advance. More information regarding shelter reservation can be found here. Camping is allowed in the authorised campsites only. You can also camp near the mountain shelters if they are full. You can also camp in the fields of nearby villages after obtaining permission from the locals.VisaIndian citizens need a Schengen visa to visit Spain. The visa costs ₹4559 + service charge and the minimum processing time is 15 days. For more information check here.When to goThe best time to visit Parque Nacional de los Picos de Europa is from June to August when the temperature ranges between 11 to 26 Celsius. Rainfall is also scanty during these months.Getting thereBy air: Bilbao (216km) is the nearest international airport with flights from India. A round-trip flight from Delhi to Bilbao costs ₹39,000. You can hire a taxi or catch a bus from Bilbao to the national park.AccommodationRefugio La Ardilla Real (₹1,176 in dorm), Rural El Molino (₹4,703 double).Have you trekked in the Picos de Europa National Park or anywhere else in Europe? Write your own travelogue and share it with millions of other travellers. And subscribe to Tripoto Youtube Channel for stunning videos.