Boulder
4WD Roads near Boulder
4WD Road Road # Difficulty
Lefthand Main FR286 Moderate 6
Mother Hill FR286C Difficult 8
Upper Carnage FR286E Moderate 5
Fireman Hill FR286D Difficult 8
Castle Gulch FR287 Easy 2
Castle Gulch Ridge FR287B Moderate 5
East Goldenage FR288 Moderate 6
Miller Rock FR252/254 Difficult 8
Beaver Bog FR113 Easy 2
Dry St. Vrain FR185/186 Easy 2
Middle St. Vrain FR114 Moderate 7
Coney Flats FR507 Moderate 6
Bunce School Road FR115 Easy 3
Cave Creek FR217 Easy 3
Iron Clads FR216 Moderate 5
Nugget Hill / Walker Mtn FR509 Moderate 7
Spring Gulch FR370,372 Moderate 5
Bear Gulch FR235 Easy 3
Switzerland Trail FR326,327,120 Easy 2
Four Mile Gulch FR328 Easy 1
Gordon Gulch FR226,228,233,314 Easy 1
Peewink Road FR332
Caribou FR505 Moderate 5
Rainbow Lakes FR298 Easy 1
Baltimore Ridge FR416 Easy 2
Jenny Creek FR502 Moderate 7
Kingston Peak FR353 Moderate 5
Mammoth Gulch FR176 Easy 3
Moon Gulch FR290 Moderate 5
Phoenix Ghost Town FR105, 109 Easy 4
Rollins Pass FR149 Easy 1
Winiger Gulch FR97 Easy 1
Winiger Ridge FR359 Easy 2
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