Idaho
DifficultGrave Creek to Magruder Corridor — Selway-Bitterroot Wilderness Divide via Paradise Guard Station
100 miles of wilderness road. No way out but through.
Trail Type: Backcountry
Canada
ModerateKluane–Haines Junction High Country Road — Dezadeash Lake to Kathleen Lake via the St. Elias Mountain Front
Biggest icefields in North America. Smallest crowds.
Namibia
DifficultTsaobis to Welwitschia Wash — Khomas Highland Desert Plateau via Farm Tracks and the Lower Swakop River Gorge
Ancient desert, zero guardrails, thousand-year plants.
Alberta
DifficultGibb River Road — Tunnel Creek to Windjana Gorge via Napier Range Limestone Corridor (Wet Season Approach)
The Rocky Mountain spine — no guardrails.
India
ExtremeZanskar Valley Winter Road — Chadar Trek Support Track via Frozen Zanskar River
The frozen river is the road.
Algeria
ExpertPiste du Tassili n’Ajjer — Djanet to Ihérir via the Tassili Plateau Canyon Circuit
Sahara's stone cathedral. Rock art. No exits.
Botswana
DifficultBoteti River Track — Maun to Nxai Pan via the Makgadikgadi Salt Pans
Salt, zebras, and silence the size of a sea.
Alaska
ModerateChilkoot Pass Road — Skagway to the Yukon Interior via the White Pass Summit Approach
Dead horses, gold fever, and the longest switchback in history.
Ishikawa
ModerateTatami Pass Road — Noto Peninsula Interior via Oku-Noto Highland Spine
Japan's forgotten peninsula, from the inside out.
USA
ModerateTrans-America Trail — Hector to Wytheville via the New River Valley Backbone
Old mountains, older river, zero pavement.