Idaho
Moderate
Lolo Pass Road
Lewis & Clark's Continental Divide crossing
Surface: Gravel
USA
Moderate
Hole-in-the-Wall Road
Wild West outlaw hideout in Wyoming's Red Desert
Alaska
Moderate
Alcan Military Highway Historic Route
WWII engineering through endless wilderness
Illinois
Moderate
Trans-America Trail – Illinois Section
Midwest miles on the coast-to-coast dream
Brazil
Moderate
Estrada Real – Ouro Preto to Tiradentes Gold Route
Colonial gold route through mountain mining towns
Arequipa
Moderate
Colca Canyon Rim Drive
Condor country above the world's deepest canyon
Ica
Moderate
Nazca Lines Desert Circuit
Desert circuit through archaeology's greatest mystery
Ica
Moderate
Huacachina to Paracas Coastal Desert Route
Sand dunes to sea lions on Peru's desert coast
Bolivia
Difficult
Camino a Laguna Colorada – Cordillera de Lipez
Desert crossing to Bolivia's flamingo paradise
Arica and Parinacota
Difficult
Ruta X-731 – Putre to Parinacota Altiplano Loop
Ancient villages in Chile's highest altiplano