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9 mi
gravel
Kingsdale Drive to Pine Hollow RoadGravel route from Kingsdale Dr to Pine Hollow Rd, Clayton, Contra Costa County, California |
8 mi
gravel
Somersville Road to Black Diamonds to Mt Diablo Regional TrailGravel route from Somersville Rd to Black Diamond Trail, Clayton, Contra Costa County, California "Fun way to cut across the hills on gravel. Starts out road into Black Diamond Regional, then turns into gravel. Some steep bits, but doable on 32s." |