Arizona
EasySitgreaves Pass Road — Oatman to Kingman via Black Mountains Historic Route 66 Spine
Route 66's meanest mountain crossing.
Trail Type: Overland Route
Montana
DifficultLonesome Highway — Pryor Mountains Wild Horse Range to Crooked Creek via Bighorn River Benchlands
Wild mustangs, limestone canyons, and zero crowds.
Alabama
ModerateWilderness Road to Breaks of the Sandy Creek — Bankhead National Forest Canyon Rim via Sipsey Fork
Alabama slot canyons nobody's talking about.
New Mexico
ModerateBrokeoff Mountains Rim Road — Jemez to Valles Caldera via Redondo Peak Divide
Volcanic caldera rim on loose Jemez gravel.
USA
ModerateLonesome Highway — Bighorn Basin Desert Floor to Meeteetse via Kirby Creek and Oregon Basin Road
Wyoming badlands, oil country, zero crowds.
USA
ModerateLonesome Highway — Gros Ventre Slide to Turquoise Lake via Red Hills Road and Atherton Creek
Landslide scars, moose meadows, and no pavement.
New Mexico
ModerateLonesome Highway — Jemez Mountains High Road to Valles Caldera via Forest Road 376
Supervolcano rim road, elk, obsidian, solitude.
Oregon
ModerateCoyote Hills to Warm Springs Summit — Ochoco National Forest High Divide via Antelope Flat (Oregon)
High ponderosa divide above Oregon's fossil country.
California
DifficultMojave Road — Afton Canyon to Kelso Depot via Soda Mountains and Government Holes
Oldest road across the Mojave Desert.
USA
ModerateLonesome Highway — Sunlight Basin Road to Dead Indian Summit via Clarks Fork Absaroka
Wyoming's deepest canyon on a forgotten back road.