Col de Spandelles is a spectacular and very hard climb in Hautes Pyrenees near Argeles-Gazost. The summit is at 1380 metres.
From the eastern side from Argeles-Gazost is is 15.5km at 6%. That does not tell the whole story. The road surface is very rough and there are ramps up to 20%.
From the west at Ferrieres it is 10.5km @ 8.4%. The road is narrow and rough, it really makes you work. Many riders say this is the hardest climb in the area.