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10 mi
gravel
Briones to Mt. Diablo Regional TrailGravel route from Briones to Mount Diablo Regional Trail to Stone Valley Rd, Alamo, Contra Costa County, California |
5 mi
gravel
Briones to Mount Diablo Regional TrailGravel route from Green Valley Rd to Ridge Top Trail, Walnut Creek, Contra Costa County, California |
2 mi
gravel
Las Tampas to Mount Diablo Regional TrailGravel route on Las Tampas to Mount Diablo Regional Trail, Alamo, Contra Costa County, California |