New Mexico
ModerateTrans-America Trail — Hachita to Antelope Wells via the New Mexico Boot Heel Desert and Mexican Border
End of the road. Literally.
Surface: Dirt
Zambia
DifficultLuangwa Valley Track — Chipata to South Luangwa via the Luangwa River Flood Plain and Mfuwe Gate
Rift floor, black cotton, and big game.
Morocco
DifficultTataga Pass to Tiout — Anti-Atlas Desert High Piste via Djebel Siroua Volcanic Spine
Burnt basalt and Berber silence.
Kenya
DifficultTsavo–Amboseli Chyulu Hills Volcanic Plateau — Mtito Andei to Amboseli via Chyulu Hills National Park (Full Wilderness Traverse)
Kilimanjaro on the horizon. Lions in the grass.
China
DifficultKarakoram Highway — Sost to Khunjerab Pass via Shimshal Valley Junction and the Pakistan–China Summit (Northbound Full Run)
4,693 meters. The roof of the road world.
California
DifficultMojave Road — Fort Piute to Government Holes via Piute Gorge Wash and Lanfair Valley (Classic Interior Segment)
Army ghost road. Basalt gorge. Zero shade.
Argentina
ExtremeRuta de los Seismiles — Paso Pircas Negras to Fiambalá via Ojos del Salado and the Puna de Atacama Volcanic Corridor (Full South Approach)
World's highest volcano. No services. No mercy.
Australia
DifficultTelegraf Track — Weipa to Bamaga via the Western Cape York Coastline and Jardine River Crossing (Full West Coast Run)
Crocs, clay, and a river you have to earn.
Alberta
ModerateIcefields Parkway — Jasper to Lake Louise via Columbia Icefield and Athabasca Glacier (Full North-to-South Traverse)
The Rockies' greatest highway, glacier to glacier.
California
DifficultMojave Road — Needles to Barstow via Fort Piute, Government Holes, and Afton Canyon (East-to-West Classic Full Crossing)
America's oldest overland route. Still unforgiving.