The Clarks Fork is a beautiful river that offers a great challenge for very advanced paddlers. The river offers challenging rapids, multiple falls and pools, lots of portaging, and careful navigation. There are other access sites along the route allowing paddlers to run only certain sections of the river. This sections starts with milder class II and III rapids but provides tougher rapids as it travels through slot canyons and a sharp S turn. Portaging multiple sections of this river is usually required.