Korketrekkeren is Oslo's longest toboggan run, where you can zoom down a 2,000-meter track from Frognerseteren to Midtstuen metro station. It's a thrilling ride with a 255-meter drop, and each run lasts about 10 minutes. You can rent sleds for around 100-150 NOK per day or bring your own and sledge for free. Just remember, Korketrekkeren is only open when there's enough snow, so keep an eye out for those perfect sledding conditions. If sledging not for you, there is also a cosy cafe.