Ski Areas in Oslo Oslo Ski Resorts Oslo is a region of Norway offering skiing and snowboarding in 2 Norwegian Ski Resorts, including Grefsenkollen and Tryvann. Snow Forecasts for Oslo No significant snow is forecast for ski resorts here right now. Oslo Ski Resorts Ski Resorts in Oslo Ski Resort Pistes Top Beginn. Interm. Experts Grefsenkollen9km6 miles373m1,224ft Tryvann-530m1,739ft