Hawaii
Easy
Maui Upcountry Ranch Roads
Paniolo country with volcanic island views
Surface: Gravel
Hawaii
Easy
Haleakala Sliding Sands Trail Access Road
Paved road to Hawaii's house of the sun
Hawaii
Easy
Polipoli Spring State Recreation Area Loop
Redwood forest loop at 6,000 feet
Hawaii
Moderate
Saddle Road to Mauna Kea Access Road
Summit drive to Pacific's highest peak
North Dakota
Easy
Prairie Potholes Wildlife Drive
Wetlands and waterfowl in pothole country
North Dakota
Easy
CCC Camp Legacy Road
Depression-era CCC camps and prairie restoration
North Dakota
Moderate
Bakken Oil Field Ghost Road Network
Industrial backcountry through boom-bust oil country
North Dakota
Easy
Devils Lake Peninsula Loop
Prairie lake loop with bison and military history
North Dakota
Easy
Dakota Prairie Grassland North Unit Loop
Prairie grassland solitude in the Bakken
North Dakota
Easy
Sheyenne River Valley Historic Trail
Wooded river valley through prairie's hidden forest