Australia
DifficultBungle Bungle Range Track — Warmun to Purnululu via the Ord River Plateau and Turkey Creek Station Road
360 million years of geology, one brutal dirt track.
Trail Type: Technical 4x4
Australia
ExpertFlinders Ranges — Arkaroola Wilderness Sanctuary Ridge-Top Tour via Bararranna Gorge
Billion-year-old ridgeline with zero guardrails.
Erongo Region
DifficultSkeleton Coast — Ugab River Terraces to Brandberg Mountain via Damaraland Volcanic Plateau
Volcanic desert, rock art, and Africa's granite dome.
Arusha Region
DifficultNgorongoro to Lake Natron — Rift Valley Floor Track via Ol Doinyo Lengai and Engaruka Ruins
Active volcano, soda lake, flamingos — real Africa.
Kunene Region
ExpertHuab River Conservancy Track — Sesfontein to Purros via the Kaokoland Desert Gorge
Elephant country, soft sand, no maps that help.
Kunene Region
ExtremeSkeleton Coast Wilderness — Kunene River Mouth to Serra Cafema via the Far Northern Namib Shore
End of the Earth. Angola on one side, the Atlantic on the other.
India
ExpertLeh to Tso Kar — Rupshu Plateau Salt Lake Crossing via Pang and Thukje
Salt, silence, and 15,000 feet of Rupshu plateau.
California
ModerateMojave Road — Piute Valley to Fort Piute via Piute Gorge Wash and Lanfair Valley (Eastern Approach)
Fort Piute: the post too brutal for the frontier Army.
Australia
DifficultGibb River Road — Derby to Kununurra via the Kimberley Gorge Country (Dry Season Classic, Bell Gorge to Manning Gorge, Southern Traverse)
The Kimberley's corrugated backbone.
North Carolina
DifficultTrans-America Trail — Hector to Murphy via the Unicoi Mountain Divide and Ocoee River Gorge
Southern Appalachian mud and mountain, TAT-style.