South Dakota
Moderate
Prairie Edge Trail – Buffalo Gap National Grassland
Remote grassland exploration through homestead country
Surface: Dirt
South Dakota
Difficult
White River Badlands Fossil Loop
Ancient sea beds and fossil hunting
South Dakota
Moderate
Badlands Sage Creek Wilderness Road
Into the heart of America's fossil treasure chest
South Dakota
Difficult
Missouri River Breaks Buffalo Gap Trail
Lewis and Clark's nightmare, modern 4x4ers' challenge
California
Moderate
Afton Canyon Road
Mojave's secret water canyon
California
Moderate
Stoddard Wells Road
Historic freight road through Joshua tree country
USA
Easy
Monitor and Merrimac Trail
Easy cruise past Civil War ironclad buttes.
California
Moderate
Old Dale Road
Historic mining supply route to the Colorado River
California
Moderate
Kelso Dunes Road
Singing sands accessed via railroad grade.
California
Moderate
Covington Flats Road
Joshua Tree's forgotten northern wilderness