Arizona
EasySitgreaves Pass Road — Oatman to Kingman via Black Mountains Historic Route 66 Spine
Route 66's meanest mountain crossing.
Surface: Gravel
Colorado
ModerateHalfmoon Road to Mount Massive Trailhead — Sawatch Range Subalpine Approach via East Fork
Base camp road for the Sawatch giants.
Montana
DifficultLonesome Highway — Pryor Mountains Wild Horse Range to Crooked Creek via Bighorn River Benchlands
Wild mustangs, limestone canyons, and zero crowds.
USA
ModerateSkyline Drive to Big Meadows — Shenandoah Backcountry Spine via Rapidan Camp and Swift Run Gap
A president's hidden fishing camp in the Blue Ridge.
California
ModerateCoyote Hills to Lassen Peak Backdoor — Lassen Volcanic Backcountry via Butte Lake Road
Volcanic backdoor most Lassen visitors never find.
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.
Montana
DifficultLonesome Highway — Beartooth Plateau North Slope to Clarks Fork Canyon via Line Creek Road
Off the Beartooth and into the deep canyon country.
New Mexico
ModerateLonesome Highway — Jemez Mountains High Road to Valles Caldera via Forest Road 376
Supervolcano rim road, elk, obsidian, solitude.