Southeast of Salmon and northeast of Leadore in the Salmon-Challis National Forest, there is a nice 10 mile section of the Nez Perce National Historic Trail (#6244) from Bannock Pass to the mouth of Canyon Creek Canyon parallel to SR29.
Note: As of September 2007, ATV riding is permitted only on designated dirt Forest Service roads. A map with designated roads can be obtained from the Forest Service HQ at (208) 756-5100. In addition, the ATV must pass a strict list of regulations.
Overall, Nez Perce National Historic Trail is the 13th most popular ATV riding trail of all 55 ATV trails in Idaho.