This study aims at presenting the planning parameter of ski course by designing Gapyung ski course. This site is located at Hacheon-ri, Gapyung-gun, Kyunggi-do and has an area $1,594,001m^2$. Design objectives of Gapyung Ski Resort were to build the most suitable ski course on the site area and make a comparative ski resort. This design process covers the following : site inventory and analysis; integration of design program and terrain analysis; slope planning and trail balance; comparison with other ski resort. This ski resort was composed of 5 lifts and 10 ski trails which are divided into 2 intermediate course, 3 high intermediate course, 4 advanced course, and I expert course. Total length of slope distance is 8,738m. This ski resort will be developed for advanced skiers and snow boarders who enjoy a mogul and a half pipe course. Therefore, the strategy of this ski resort is marked for target market of high intermediate.