Montana
DifficultLonesome Highway — Centennial Range Divide Road to Elk Lake via Red Rock Pass
Grizzly country on the Continental Divide.
Feature: High Altitude
California
ExpertWaucoba-Saline Valley Road South — Inyo Mountains to Saline Valley Floor via Steel Pass
Steel Pass down to warm springs in Death Valley's loneliest valley.
USA
ModerateLonesome Highway — Finger Lakes Upland to Big Piney via the Wyoming Range Back Road
Wyoming's loneliest range, wide open and yours.
Colorado
DifficultTincup Pass Road — St. Elmo to Tincup via the Sawatch-Elk Range Divide
Two ghost towns, one brutal alpine divide.
Arizona
ModeratePine Mountain Road to Hualapai Peak — Walapai Wilderness High Divide via Cerbat Mountains
Mojave desert floor to ponderosa sky island above Kingman.
Colorado
ExpertCorkscrew Pass to Animas Forks — Silverton High Country Loop via Picayne Gulch
Ghost towns and 13k shelf roads above Silverton.
Idaho
EasyFortymile Salmon River Canyon Road — Clayton to Salmon via the Pahsimeroi Valley Back Road
Two mountain ranges, one forgotten valley, zero crowds.
California
ModerateBodie Ghost Town Road — Bridgeport to Bodie via Cottonwood Canyon High Desert Approach
California's deadest boomtown, still standing.
California
DifficultLonesome Highway — Owens Valley to White Mountain Peak via Barcroft Road
Highest drivable road in the lower 48.
Colorado
DifficultPoverty Flat Road to Idarado Mine — Uncompahgre Gorge Rim to Red Mountain Pass Backdoor
Mining ruins and shelf roads above Ouray's box canyon.