Husebyrennet was a ski jumping competition which was held in Ullern, Oslo, Norway.

The ski jump, called Kastellbakken, was viewed as gigantic for its time, with length around 20 meters readily achieved.

At the first recognized competition held in Husebybakken in 1879, Olaf Haugann of Norway set the first world record for the longest ski jump at 20 meters.

[citation needed] In 1883, Fridtjof Nansen participated, and was a main attraction, having then won fame by finishing the distance Bergen to Oslo on skis.

This uncertainty relating to the conditions led to the competition being moved permanently to the location of what is now Holmenkollbakken in 1892.