Idaho
ExpertMagruder Corridor Road — Red River to Darby via the Selway-Bitterroot Divide
Wildest road in the lower 48. Full stop.
Surface: Mixed
Colorado
DifficultWeminuche Wilderness Approach — Elk Creek to Piedra River via Missionary Ridge
Burned ridgelines and wild cutthroat water.
Colorado
DifficultMedano Pass Primitive Road — Great Sand Dunes to Wet Mountain Valley
Sand, creek crossings, and a Sangre de Cristo crossing.
Colorado
ExtremeBlack Bear Pass Road — Silverton to Telluride via the Jaw-Dropper
Colorado's most notorious shelf road. One way down.
Colorado
ExpertImogene Pass Road — Ouray to Telluride via the High San Juans
13,114 feet of pure San Juan exposure.
USA
ModerateWedge Overlook to Iron Wash — San Rafael Swell West Rim Desert Circuit
Slot reef, Sinbad country, nobody else around.
California
ExpertInyo Mountains Wilderness Road — Cerro Gordo to Swansea via Saline Valley Overlook
Silver ghosts and shale shelves above Death Valley.
Oregon
DifficultOwyhee Uplands Backcountry — Jordan Valley to Rome via Three Forks of the Owyhee
Oregon's emptiest canyon — go prepared or don't go.
USA
ModerateChicken Creek Road to Boulder Mountain Summit — Dixie National Forest High Plateau
Utah's highest timber plateau — almost nobody's up here.
USA
DifficultSquaw Flat to Confluence Overlook — Needles District Canyon Country Bench Road
Slickrock and sand to where two rivers collide.