Col d'Aspin is a mountain pass in the French Pyrenees in the department of the Hautes-Pyrénées. It connects Sainte-Marie-de-Campan, in the upper Adour valley, with Arreau, on the River Neste.

Mountain pass cycling milestones are signposts that provide cyclists with information about their current position with regard to the summit of the mountain pass. They always provide information for cyclists going uphill. Sometimes the signs are two-sided, thereby providing information also for cyclists going downhill.