Puerto Rico
DifficultUtuado River Valley Coffee Plantation Circuit
Coffee plantation ruins through Cordillera Central
Surface: Gravel
Puerto Rico
EasyIsabela Karst Country Sea Cave Access Road
Sea caves and blowholes on limestone coast
Puerto Rico
ModerateCulebra Naval Ammunition Depot Access Roads
WWII bunkers and secret beaches on forgotten island
Puerto Rico
ModerateArecibo Observatory to Cueva Clara Circuit
Observatory to underground cathedral
Puerto Rico
EasyMosquito Bay to Esperanza Sugar Mill Ruins Road
Glowing bay to ghost mill adventure
Puerto Rico
ModerateCulebra Island Mosquito Bay Coastal Circuit
Island military ruins and hidden beach circuit.
Puerto Rico
DifficultCordillera Central Ridge Road (Ruta Panorámica Section)
Island spine traverse through cloud forest and coffee country
Indiana
ModerateClark State Forest Timber Ridge Loop
Working forest roads through Indiana timber country
Iowa
EasyShimek Forest Pioneer Cemetery Backcountry Road
Pioneer homesteads and prairie through Iowa's trees
Iowa
ModerateStephens State Forest Timber Management Roads
Iowa's most rugged forest adventure