Nebraska
Difficult
Missouri River Breaks Trail
Wild Missouri's technical challenge.
Surface: Mixed
Hawaii
Difficult
Maunakea Summit Road
Sacred summit climb to astronomical observatory
Hawaii
Moderate
Ka’ena Point State Park Northern Access Road
Oahu's wild west coast to the island's edge
Hawaii
Moderate
Kaupo Road
Maui's forgotten coast through ranch and lava country.
Hawaii
Expert
Waipio Valley Access Road
25% grade into Valley of the Kings
Hawaii
Difficult
Old Pali Highway
Abandoned highway through Ko'olau razor ridges
North Dakota
Moderate
Enchanted Highway Sculpture Loop
Giant metal sculptures on endless prairie backroads
North Dakota
Difficult
Antelope Creek Fossil Trail
Dinosaur fossils in remote Hell Creek badlands
North Dakota
Moderate
Slope County Badlands Backcountry Circuit
Hidden badlands beyond the tourist trail
North Dakota
Moderate
Garrison Dam Missouri River Breaks Loop
Missouri River breaks below America's biggest dam