Hawaii
Moderate
Keanakakoi Crater Rim Road
Ancient quarry roads through volcanic glass fields
Surface: Dirt
Hawaii
Difficult
Molokai Forest Reserve Ridge Road
Into Molokai's last native cloud forests
Hawaii
Moderate
Puna Coast Lava Access Road
Where molten rock meets the Pacific Ocean
Hawaii
Easy
Kokee Road to Pu’u O Kila Lookout
Cloud forest road to Na Pali cliff views
Hawaii
Moderate
Munro Trail to Lana’ihale Summit
Lanai's highest point with five-island views
Hawaii
Difficult
Kahana Valley Backcountry Road
Deep jungle penetration into pristine valley
North Dakota
Moderate
Burning Coal Vein Road
Underground coal fire burning since the 1950s
North Dakota
Moderate
Souris River Loop Trail
Prairie pothole wetland wilderness loop
North Dakota
Easy
Fort Ransom State Park Sheyenne River Trail
North Dakota's hidden forest valley adventure
North Dakota
Difficult
Missouri River Confluence Backcountry Trail
Remote river confluence technical challenge