Colorado
ModerateSlumgullion Pass to Spring Creek Pass — San Juan Skyway High Country Connector
Two passes, one living landslide, zero crowds.
Trail Type: Overland Route
Nevada
DifficultCalico Mountains Wilderness Loop — Black Rock Desert Rim to High Rock Canyon
Volcanic walls, playa dust, and zero cell bars.
Colorado
ModerateMineral Belt Trail — Leadville’s Historic Mining Loop via Iowa Gulch
Silver boom ruins at 10,200 feet.
Oregon
EasyBarlow Road — Mount Hood’s Historic Oregon Trail Bypass via Timberline
Oregon Trail wagon ruts you can still drive.
Oregon
ModerateBroken Top to Green Lakes — Cascade Volcanic High Country Road via Todd Lake
Pumice, volcanoes, and Oregon sky.
Idaho
DifficultLolo Motorway — Lewis and Clark’s War Road Across the Bitterroots
100 miles on the ridge Lewis and Clark barely survived.
Colorado
DifficultCinnamon Pass Road — Lake City to Silverton via the Alpine Loop
12,620 feet of raw San Juan shelf road.
Colorado
ModerateBowen Gulch to Grand Ditch Road — Never Summer Mountains Wilderness Edge Traverse
Hand-dug canal road above 10,000 feet. Moose country.
USA
ModerateNotom-Bullfrog Road — Capitol Reef to Lake Powell via the Waterpocket Fold
The Waterpocket Fold's lonesome desert spine road.
Montana
ModerateRimrock Road — Breaks of the Missouri Backcountry via Blaine County
Lewis and Clark's river, from the top down.