Mexico
ModerateConzatti Road — Hierve el Agua to Tlacolula via the Sierra Juárez Descent
Oaxaca's back door nobody takes.
Surface: Dirt
Australia
DifficultStrzelecki Track — Innamincka to Lyndhurst via the Cooper Creek Desert Corridor
Burke and Wills didn't make it. You might.
USA
DifficultTrans-America Trail — Addison to Waterville via the Monongahela Backcountry and Cranberry Wilderness Edge
Appalachian mud, ridgelines, and no signal.
Canada
ModerateTrans-Labrador Highway — Labrador City to Happy Valley-Goose Bay via the Wilderness Plateau
530 km of boreal nothing. Bring two spares.
Montana
DifficultMontana BDR Northern Segment — Eureka to Whitefish via the Whitefish Range and Stillwater River Divide
Hard against the Canadian border in real Montana wilderness.
Andalusia
DifficultLobo Valley Road — Ronda to Benaoján via the Sierra de Grazalema Limestone Divide
Andalusia's hidden karst — past the tourist gorge.
Idaho
DifficultIdaho BDR Central Segment — Rogerson to Challis via the Snake River Plain and Lost River Range
Idaho's volcanic spine. Remote. No guardrails.
Tennessee
ModerateTrans-America Trail — Damascus to Waterville via the Blue Ridge High Spine
Blue Ridge on dirt. No guardrails, no tourists.
Aysén Region
ModerateCarretera Austral — Coyhaique to Villa O’Higgins via the Patagonian Wilderness Corridor
Patagonia's impossible road. Built by conscripts.
USA
ModerateTrans-America Trail — Rawlins to Dubois via the Wyoming Basin and Wind River Range
200 miles of Wyoming with nobody watching.