Bob Pond–Twin Ponds, 7 sights is a 12.3-mile out-and-back in Mount Diablo State Park near Rock City, CA. The route passes TwinPonds and Twin Ponds before reaching Bob Pond at the turnaround, 5.9 miles in. It climbs 2,101 ft, with sections as steep as 17% grade, and is mostly dirt. It scores 76/100 on the Ambleway Wildness scale: genuinely wild.
Elevation
0 mi492 – 1,752 ft · steepest grade: 17%12.9 mi
Getting there
Trailhead: Trail Through Time 37.85019, -121.93391
Nearest town Rock City, CA
Directions
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Bob Pond–Twin Ponds, 7 sights
12.3 mi · ▲ 2,101 ft · 5 hr 9 min
Elevation 491–1,752 ft
Out & Back · Mount Diablo State Park
Trailhead: Trail Through Time · 37.85019, -121.93391
Weather Sep 20: sunrise 6:55 AM · sunset 7:09 PM
Toilets at the trailhead · Drinking water at the trailhead · Parking lot at the trailhead
- Start on Trail Through Time, heading NW.
- 0.2 miBear left onto Wall Point Road, heading NW.
- 1.1 miTurn left onto Secret Trail, heading NW.
- 50 ftTurn right onto Wall Point Road, heading NW.
- 2.2 miContinue straight onto Briones to Mt. Diablo Regional Trail, heading NW.
- 0.3 miBear left, heading N.
- 1.3 miBear left, heading NW.
- 0.1 miBear right, heading NW.
- 150 ftContinue straight onto Borges Ranch Trail, heading NW.
- 450 ftBear left, heading NW.
- 0.2 miPass TwinPonds.
- 50 ftPass Twin Ponds.
- 350 ftTurn left onto Twin Ponds Loop Trail, heading NW.
- 50 ftContinue straight onto Borges Ranch Trail, heading NW.
- 0.3 miPass Bob Pond.
- 0.2 miTurn right onto Hanna Grove Trail, heading N.
- 250 ftBear left onto Borges Ranch Road, heading N.
- 50 ftReach Bob Pond, then turn around and head back the way you came.
- 100 ftBear right onto Hanna Grove Trail, heading N.
- 250 ftTurn left onto Borges Ranch Trail, heading NW.
- 0.5 miContinue straight onto Twin Ponds Loop Trail, heading S.
- 50 ftTurn right onto Borges Ranch Trail, heading S.
- 0.5 miBear right onto Briones to Mt. Diablo Regional Trail, heading S.
- 1.6 miContinue straight onto Wall Point Road, heading E.
- 2.2 miTurn left onto Secret Trail, heading NE.
- 50 ftTurn right onto Wall Point Road, heading NE.
- 1.1 miBear right onto Trail Through Time, heading NE.
- 0.1 miArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
96% dirt4% unspecified
Weather
Sunrise 6:55 AMSunset 7:09 PM
Sunset
The best sunset spot on this hike is 0.1 mi in (~4 min). Leave by 6:45 PM for the 7:09 PM sunset. Back at your car by 7:28 PM — 8 min before dark. Car visible from the viewpoint
Good to know
- Toilets at the trailhead
- Drinking water at the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from Trail Through Time Trailhead
- Borges Ranch Trail–Briones to Mt. Diablo Regional Trail, 3 sights 12.8 mi · ▲ 2,292 ft
- Briones to Mt. Diablo Regional Trail–China Wall Road, 3 sights 8.9 mi · ▲ 1,493 ft
- Misko's Regret–Trail Through Time, 3 sights 11.8 mi · ▲ 2,287 ft
- Fossil Hill–Willow Spring Pond, 10 sights 15.9 mi · ▲ 2,606 ft
- Holey Rock–Pine Pond, 6 sights 11.7 mi · ▲ 2,603 ft
- Sulphur Creek Pond–Bob Pond, 11 sights 15.4 mi · ▲ 2,767 ft
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