Carretera Mansilla de las Mulas-Arriondas

This run-hike climb rises above Oseja de Sajambre in Castilla y León. Expect 35 to 58 minutes. The hardest 500 metres average 16.6% and start 3.1 km in, so the worst of it lands when you are already committed. It faces north: the shady side, where snow stays longest. Its 2.8 TEP puts it in the easier half of the catalogue. Graded mountain hiking: rougher ground where footing starts to matter.