Tajikistan
DifficultZulümart Pass to Murghab — Pamir Highway High Plateau via Karakul Lake (M41)
The Roof of the World — Karakul to Murghab above 4,000 m.
Surface: Gravel
New Mexico
ModerateTrans-America Trail — Pie Town to Reserve via the Continental Divide Grassland Corridor
Continental Divide silence and zero cell bars.
USA
ModerateTrans-America Trail — Clifton Forge to Wytheville via the Virginia Allegheny High Divide
Ridge-top Virginia dirt the maps forgot.
Gilgit-Baltistan
ModerateKarakoram Highway — Gilgit to Sost via Hunza Valley and Passu Glacier
Hunza Valley to the roof — the KKH at its wildest.
USA
ModerateTrans-America Trail — Ranger to Clifton Forge via the Virginia Allegheny Highlands
Allegheny solitude on the TAT's quietest stretch.
Graubünden
DifficultPasso dello Spluga — Chiavenna to Splügen via the Italian-Swiss Alpine High Road
Napoleon moved an army here. Your rig can handle it.
Arkansas
ModerateTrans-America Trail — Heber Springs to Bee Branch via the Ozark National Forest River Highlands
Ozark clay and creek crossings, no services, no problem.
Argentina
ExpertPaso San Francisco — Fiambalá to Paso San Francisco via the Puna de Atacama Volcanic Corridor
Volcanoes, altitude, and no way back easily.
North Carolina
DifficultTrans-America Trail — Hector to Murphy via the Unicoi Mountain Divide
The TAT's Appalachian teeth — bring a winch.
Himachal Pradesh
DifficultManali–Leh Highway — Manali to Leh via Rohtang Pass, Baralacha La, and Tanglang La
Five passes. Four months. Zero margin for error.