The Ski North Ultra is an ultra-distance, classic-only cross-country skiing event on the North Shore of Lake Superior. Participants can choose between 38K and 100K options that wind through the technical Norpine, Cascade River State Park, and Bally Creek trail systems near Lutsen, Minnesota. Designed more as an adventure than a traditional race, the demanding course challenges skiers with steep climbs and narrow descents through scenic birch and pine forests.