South Dakota
Moderate
Prairie Edge Trail – Buffalo Gap National Grassland
Remote grassland exploration through homestead country
Feature: Historic
South Dakota
Difficult
Centennial Trail – Black Hills Section
Cross the entire Black Hills backcountry
South Dakota
Expert
Bulldog Gulch Trail
Granite gauntlet that eats differentials
South Dakota
Moderate
Iron Mountain Road
Pigtails, tunnels, and granite cathedrals
South Dakota
Difficult
White River Badlands Fossil Loop
Ancient sea beds and fossil hunting
South Dakota
Easy
Custer State Park Wildlife Loop Road
Where buffalo rule the road
South Dakota
Easy
Spearfish Canyon Scenic Byway
Black Hills limestone canyon spectacular
South Dakota
Difficult
Missouri River Breaks Buffalo Gap Trail
Lewis and Clark's nightmare, modern 4x4ers' challenge
South Dakota
Moderate
Black Hills Backcountry Byway
Black Hills mining history meets granite cathedral spires
California
Moderate
Afton Canyon Road
Mojave's secret water canyon