Libya
ExtremePiste de l’Erg Murzuq — Germa to Umm al-Maa via the Fezzan Oasis Lakes and Sand Sea
Garamantian ruins to lost desert lakes.
Surface: Sand
New Mexico
DifficultTrans-America Trail — Silver City to Alpine via the Gila Wilderness High Divide
Geronimo's country, America's first wilderness, zero cell bars.
Algeria
ExpertPiste de Timimoun — Adrar to Timimoun via the Grand Erg Occidental Red Oasis Corridor
Red oasis cities and a sand sea that swallows tracks whole.
Morocco
ExpertPiste de l’Erg Chebbi Sud — Merzouga to M’Hamid via the Saharan Dune Corridor and Draa Valley
Real Sahara. No tourist camps past this point.
Argentina
ExpertPaso San Francisco — Fiambalá to Paso San Francisco via the Puna de Atacama Volcanic Corridor
Volcanoes, altitude, and no way back easily.
Chad
ExtremePiste de l’Ennedi — Fada to Archei Guelta via the Ennedi Massif Rock Art Circuit
Prehistoric art and desert crocs. No safety net.
New Mexico
ModerateTrans-America Trail — Grants to Pie Town via the Continental Divide Dirt Corridor
Continental Divide dirt and a slice of pie at the end.
Chad
ExtremePiste du Tibesti — Faya-Largeau to Zouar via the Tibesti Volcanic Massif
Africa's forgotten volcanoes. No safety net.
California
ModerateMojave Road — Afton Canyon to Piute Spring via Soda Lake and Government Holes (West-to-East Historic Crossing)
The Army's old desert highway, still running.
Australia
ExpertCape York Telegraph Track — Bramwell Junction to Bamaga via the Old Telegraph Line (South to North Full Run)
Australia's hardest run to the top.