The rapids are graded on a scale of one to six depending on their ferocity. Trips range from one or two days to two-week expeditions, and often combine some trekking to get to the remote rivers in the first place. Rafting trips are usually planned in the dry seasons from October through mid-December and March through early May.
The Trishuli River (grade 3+) is the most popular among raftable rivers. Close to Kathmandu, the trip takes you down all the way to the Chitwan National Park.Other popular rivers include the Kali Gandaki (4-4+) near Pokhara, Bhote Koshi (4-5), Marshyangdi (4-5+), Karnali (4-5) and the Sun Koshi (4-5), which runs 270 km and requires 8-10 days.
