Skiing under a magical winter sunrise—only possible with a little effort and the right gear on one of Aspen Snowmass’ many uphill routes. 📈 What is uphilling? Uphilling (or skinning) means ascending the mountain under your own power using skins, snowshoes, or ice spikes. 🏔️ Which mountains can I uphill? All four Aspen Snowmass mountains have uphill routes, but rules vary by mountain and conditions. Check the Aspen Snowmass app for daily open routes and review policies for each hill via the lin