Skiklubben Ondur was a Norwegian skiing club, based in Oslo but with its sporting facilities in Vestre Aker (before 1900) and Bærum.
[2] The original by-laws of the club prescribed a membership that should not surpass 15; also, the active members had to hail from Kristiania.
In 1900 the club moved to Muren near Øverland in Bærum, where a cabin Ondurstua and a small ski jumping hill was also established.
Among others, Mostue finished fourth in the 50 kilometres cross-country at the Holmenkollen Ski Festival in 1902.
Other members include Eilert Falch-Lund, Hagbart Steffens, Rudolf Horn and Hagbarth Lund.