If you want to speed up your visit in Oslo during the winter, a fun way is to take the Korketrekkeren in Oslo.
Korketrekkeren is 2000 meter long, and the elevation drop is 255 meters. One non-stop ride takes 8-10 minutes and when you have reached the bottom it’s easy to take the metro right back up for a new run.
Did you forget to bring your own sledge when you came to Oslo? no worries, there is possibilities to rent close to Frognerseteren metro stop.
find more information at www.visitoslo.com