La senda de la Osa (The path of the bear) is a 104 km circular hiking route in the western Pyrenees running largely through the Natural Park of the Western Valleys (Aragon, Spain) and through the National Park of the Pyrenees (Aquitaine,France). The route was created in 2008 to publicise the recently created natural Park of the Western Valleys and follows the steps of Camille, one of the last indigenous bears of this area whose habitat was the path that the route follows.This is also where its name comes from.
Day 1. Somport- Arlet refuge
Meet up with the guide at the AISA refuge in Puerto de Somport, check the equipment and set off on your first day, heading for the Arlet refuge, crossing beech and oak forests, to reach the French slope, with all its splendor. Overnight at the Arlet refuge. Duration: 6/7 h; Distance: 19 Km. Difference in level: +1,1148 m -781 m.
Day 2. Arlet refuge - Lauzat
Early breakfast and then climbing up to the Saoubathou Pass, to reach the Puerto del Palo from where you will be able to enjoy wonderful views of the high mountains and the cirque of Lescún. Then we will have a long descent to Lauzat. Overnight stay at the mountain refuge. Duration: 7 h Distance: 20 Km. Difference in level: +518m - 1,641 m
Day 3. Lauzart - Linza refuge
Today the stage will go along the Pont de Lamar and the Cabaña de Ansanbere, before reaching the Petrechema Pass, from here you will begin the decent to the Linza refuge. Overnight stay at the refuge. Duration: 8 h Distance: 17 Km. Difference in level: +1,286 m. -789 m.
Day 4. Linza refuge – Gabardito refuge
Today is one of the longest and hardest stages, therefore you will set off very early, heading for the Zuriza campsite, from here we will begin our ascent to Taxeras and the strait of la Ralla, before reaching the Lenito bajo pass and then we will go down to the Puente de Santa Ana, and from here it is just a short ascent by track up to the Gabardito refuge. Duration: 9/10 h Distance: 23 Km. Difference in level: +1,640 m. – 1,600 m
Day 5. Gabardito refuge – Lizara refuge
This is a more relaxed day where you will go through the forest to the “Dios Te Salve” shepherd’s huts and then, through meadows, to the Foratón pass. Optional ascent up to the Bisaurín peak (2,676 m.) and then back down again. Descent to the Lizara refuge. Duration: 4 h Difference in level: +700 m. / -550 m.
Day 6. Lizara refuge - Puerto del Somport (night optional)
On your last day of the route you will climb up to the Puerto de Bernera. You will enter the small and lost Valle de Los Sarrios, Ibón de Estanés, Bosque de la Hayas and Candanchú. Upon arrival at the Puerto de Somport, It is possible to spend the night there with booking in advance. Duration: 6.5 h Difference in level: +1,100 m. -1,000 m
♦This route is designed for people used to hiking, but who do not usually hike for more than 1 or 2 days in a row. It is also suitable for people who want to start hiking and discover one of the most special areas of the Aragonese Pyrenees, with differences in level ranging between 600 and 900 metres.
♦As a general rule we suggest taking a break every 2 or 3 hours, to rest a little and have a bite to eat to get your strength back. We recommend taking a longer rest break at about 13:00 hours to eat something more substantial and rest a little after lunch.
Rucksack with 40-litres capacity; trekking boots (already worn in) with waterproof membrane if possible; gaiters; socks; breathable, quick-drying trousers; T-shirts; high neck base layer polo shirts; fleece jacket; waterproof jacket; primaloft or down jacket or similar; hat; sun hat; thin gloves; maximum protection sunglasses; telescopic walking poles. high protection factor sun cream for skin and lips, knife and lighter; spare clothes; personal toiletry bag; light towel; water bottle; headlamp with spare batteries; personal first aid kit with aspirins, items for dressings, foot patches; wide sticking plasters; GPS.