Geilo mountain village is a popular winter ski resort, both for alpine and cross-country skiing, as well as other kinds of winter activities like dog sledding & horse sleigh. Geilo is located approximately midway between Oslo and Bergen, and due to its easy access by train lots of inhabitants of both cities have their second homes/mountain chalets in the area. Most Norwegians love skiing!
Finse, being the highest station, is also the most windy and a popular paragliding area. During the winter months snow storms are quite frequent, with heavy snowfall.
Voss village hosts the annual Extreme Sports Festival, with all kinds of sports like rafting, hang-gliding, paragliding, skydiving. Voss has excellent alpine skiing facilities.
Read more about scenic rail lines in Norway