On the Indian side there are two routes to Jelep La, one through Gangtok and the other through Kalimpong. The Kalimpong route is an ancient one which was responsible for the boost in the local economy due to the trading of wool and furs early last century. The pass was closed after the Sino-Indian War in 1962. It passes through the towns of Pedong in northern West Bengal, Rhenok, and Kupup. The route from Gangtok passes through the towns of Sherathang, nearby Changu lake and alongside Nathu La and through Kupup.