Rideau Valley Air Park, located 3NM south of Kars is a small airport south of Ottawa, Ontario, Canada on the shore of the Rideau River. The airport has a single 1800by grass runway, and serves mainly ultralight and glider traffic.UsersRideau Valley Soaring is a gliding club that operates from the Kars/Rideau Valley Air park on a daily basis during the soaring season. The club consists of approximately 30 members flying both private and club aircraft. The gliding club owns a Grob 103 and a Schweizer SGS 2-33 training gliders plus a SZD-50 Puchacz and a Schweizer 1-34. The club also hosts interclub competitions with the Gatineau Gliding Club and the Montreal Soaring Council.