 At León the road becomes a toll Autopista AP-66 and the N-630 a trunk road as they pass through the "Montes de León" and "Sierra Cantábrica".South of León there is a junction with the Autopista AP-71 and Autovía A-231.The N-630 crosses the "Alto del Rabizo" (1,160m) and Puerto de Pajares (1,379m).