@pboulch We did a nice itinerary in a relatively quiet part of the Pyrenees. Went from Baños de Panticosa (Es) to Refuge Wallon (Fr) and back in 3 days over the Puerto de Marcadau. Could have done it in 2 days but we took our time. Beautiful lakes and valleys to camp at.
Photos at https://spanishhighs.smugmug.com/Mountains/Pyrenees/3000-Ibones-June-2025
Hope this helps. You will love it. It's beautiful. If you wish I can send you a GPX file of our route?