Ski jumping is a snow sport in which the skiers ski down a takeoff ramp, then jump from the end of it and fly as far as possible before landing near a calculation point marked at the hill. They are scored on the basis of the distance covered and the style used. The sport was originated (as recorded) in 1808 in Norway when a Danish-Norwegian lieutenant Olaf Rye launched himself on the skis and covered a distance of 9.5m in the air to show the courage to his fellow soldiers. The first ever public competition of ski jumping took place at Norway on 22 January 1862. The sport is a part of winter Olympics since 1924for men only and since 2014 for women also. The ski-jumping events can also be organized in summers on artificial surfaces made of plastic. The international federation of the sport (FIS) was founded in 1924.
Ski jumping competitions take place on snow-covered hills. It consists of an in-run (which is a specially constructed takeoff ramp) where the skier runs down before the jump, a landing slope and an out-run which may be flat or uphill which allows the skier to stop. The course consists of a construction point (K-point) where the skiers land and which is used for scoring the distance covered by the skiers.
The small hills have a hill size of around 50 m with the K-point at around 44m, the medium hills have the hill size of 50-84 m with the K-point at 45-74m, the normal hills have the hill size of 85-109 m with the K-point at 75-99m, and the large hills have the hill size of 110-184 m with K-point at 100-169m. The hill size of more than 185 m with the K-point at more than 170m is called the ski flying hill.