Meemsd, as shown above, there are various interesting routes from Lourdes to Saint-Jean-de-Luz, and many interesting towns and villages, including Pau, on the way. However, I would recommend a route through Oloron-Saint-Marie, with its many pilgrim associations, then on to Saint-Jean-Pied-de-Port, which you clearly already know. From there, the fabulous Chemin de Saint-Jean à Irún, also known as the Irún Link, will take you to Irún in either three or four days. The route skirts the lower slopes of the Pyrenees in the French Pays Basque. The scenery is outstanding, the villages fascinating and, unless you are familiar with the Pays Basques, are a seemingly different and wonderful world. I have walked numerous Caminos and, six years later, the four days remain my favourites. I stayed at Bidarray (tiny unmanned hostel), Espelette (pilgrim accommodation in a house above a nursery school), and Trabenia, near Ascain (a farmhouse hostel). Accommodation is more limited if you want to walk it in three days. Route and accommodation details are available online from Amis du Chemin de Saint Jacques Pyrénées-Atlantiques, who will provide maps (IGN 1:25000 with the route highlighted) downloadable as PDF files or savable offline. The route is waymarked pretty well and remains in France until crossing the bridge from Hendaye to Irún. If your French (or Basque!) is not good, the Amis will happily respond in English. I thoroughly recommend this route, as you can see. But, whatever you choose, Buen Camino! Tom