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Intermediate/Difficult
“A steep fire road that circles Costonoan Ridge. ”
2.5
Miles4.0
KMDoubletrack
Intermediate/Difficult
Doubletrack
Intermediate/Difficult
Local Club: Bicycle Trails Council of the East Bay
Aug 12, 2026: Win Your Dream Ibis Bike!
Jul 29, 2026: Filing deadline approaching for EBRPD Director elections
Jun 30, 2026: BTCEB Buzz June 2026
Land Manager: City of Walnut Creek, CA - Open Space
Mt. Diablo - From Castle Rock EBRP (Pine Canyon)
21.6 mi 34.8 km • 3,643' Up 1110.5 m Up • 3,644' Down 1110.57 m Down
Walnut…, CA
Old Borges Ranch Double Loop
6.5 mi 10.4 km • 756' Up 230.58 m Up • 752' Down 229.29 m Down
Walnut…, CA
Las Trampas Madrone Loop
7.4 mi 11.9 km • 1,317' Up 401.46 m Up • 1,317' Down 401.4 m Down
Alamo, CA
Briones Loop-de-Loop (Auto Free)
20.3 mi 32.7 km • 2,592' Up 789.95 m Up • 2,857' Down 870.95 m Down
Lafayette, CA
Dark Side of the Briones (auto free)
18.9 mi 30.4 km • 2,243' Up 683.54 m Up • 2,519' Down 767.94 m Down
Lafayette, CA
Wildcat Canyon Loop
13.5 mi 21.7 km • 1,176' Up 358.58 m Up • 1,194' Down 363.98 m Down
Kensington, CA
Unknown
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