The Whitewater River run in the Cabinet Mtns Wilderness Boundary, Sec. 3, T27N, R32W to Bull River, Sec. 12, T27N, R33W in Idaho is a popular destination for whitewater enthusiasts. The ideal streamflow range for this run is between 500 and 1500 cfs. The class rating for this segment is Class III - IV, with a total distance of approximately 9 miles.

Some specific river rapids/obstacles on this run include Twisted Sister, Pocket Creek, and Hell's Gate. Twisted Sister is a narrow and technical rapid, while Pocket Creek offers a steep drop with a tight turn. Hell's Gate is the most difficult rapid on this run, featuring a large hole followed by a steep drop.

Specific regulations to the area include a permit system for overnight camping and a limit of 12 people per group. It is also important to note that this run is only recommended for experienced whitewater paddlers due to its technical nature and challenging rapids.