Algeria
ExpertPiste de l’Hoggar Sud — Tamanrasset to In Guezzam via the Saharan Spine and Algerian-Niger Border
Sahara's spine — where the desert gets serious.
Feature: High Altitude
Arusha Region
DifficultNgorongoro Crater Rim to Lake Natron — Rift Valley Volcanic Floor via Ol Doinyo Lengai and Engaruka Ruins
Active volcano, soda lake, forgotten city.
Argentina
DifficultPaso Agua Negra — Vicuña to Rivadavia via the Dry Andes High Desert Crossing
4,765 metres of Andean silence between two countries.
USA
ModerateTrans-America Trail — Pinedale to Dubois via the Wind River Range High Desert and Union Pass
One ridge. Three oceans. No cell signal.
Antofagasta Region
ExpertRooftop of the Andes — Paso Sico to Paso de Jama via the Puna de Atacama High Volcanic Circuit
Two passes, one brutal Andean loop.
Australia
ExpertArkaroola Ridge-Top Tour — Gammon Ranges Volcanic Spine via Bararranna Gorge and Sillers Lookout
Ancient lava spine above the South Australian outback.
Graubünden
ModeratePasso dello Spluga North — Splügen to Thusis via the Swiss Alpine High Road
Napoleon's cliff road through the Swiss Alps.
India
ExpertZanskar Valley Road — Kargil to Padum via the Suru Valley and Penzi La Pass
Ladakh with the guardrails removed.
Canada
DifficultDempster Highway — Dawson City to Inuvik via the Richardson Mountains and Peel Plateau (Classic Full North Traverse)
740 km of Arctic gravel. Bring two spares.
Iceland
DifficultLandmannalaugar to Þórsmörk — Laugavegur Highland Track via Hrafntinnusker and Emstrur (Full Classic Traverse)
Volcanoes, obsidian, and glacial fords — no bridges.