This April, Borea Adventures will offer yacht-supported ski trips to the Hornstrandir Nature Reserve, along Iceland's remote northwest coast. Guests board a 60-foot, 10-bunk sloop in Ísafjördhur and spend six days sailing to the bases of 2,900-foot peaks, hiking up, and skiing down with Rúnar Óli Karlsson, who's been climbing in Iceland for 21 years. $2,330; boreaadventures.com