Sulfur Spring–Bob Pond, 5 sights is a 2.5-mile out-and-back in Diablo Foothills Regional Park near Walnut Heights, CA. The route passes Bob Pond before reaching Sulfur Spring at the turnaround, 1.3 miles in. It climbs 438 ft, with sections as steep as 16% grade. It scores 75/100 on the Ambleway Wildness scale: genuinely wild.
Elevation
0 mi371 – 673 ft · steepest grade: 16%2.6 mi
Getting there
Trailhead: Hanna Grove Trail 37.89203, -122.00323
Nearest town Walnut Heights, CA
Directions
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Sulfur Spring–Bob Pond, 5 sights
2.5 mi · ▲ 438 ft · 1 hr 3 min
Elevation 372–671 ft
Out & Back · Diablo Foothills Regional Park
Trailhead: Hanna Grove Trail · 37.89203, -122.00323
Weather Aug 3: Clear, high 100°F / low 68° · precip 0% · wind 9 mph · sunrise 6:14 AM · sunset 8:16 PM
Drinking water at the trailhead · Parking lot at the trailhead
- Start on Hanna Grove Trail, heading W.
- 50 ftPass Bob Pond.
- 50 ftTurn left onto Borges Ranch Trail, heading S.
- 0.3 miTurn left onto Briones to Mt. Diablo Regional Trail, heading SE.
- 0.2 miBear left onto Fairy Lantern Trail, heading E.
- 0.5 miTurn left onto Stage Road, heading SE.
- 0.1 miReach Sulfur Spring, then turn around and head back the way you came.
- 0.1 miTurn right onto Fairy Lantern Trail, heading W.
- 0.5 miBear right onto Briones to Mt. Diablo Regional Trail, heading W.
- 0.2 miTurn right onto Borges Ranch Trail, heading NW.
- 0.3 miTurn right onto Hanna Grove Trail, heading N.
- 50 ftArrive back at the trailhead.
Each distance is the walk from the previous step. Tap a step for a map of its junction.
Trail surface
58% dirt42% unspecified
Weather
ClearTemperature 100°F68°
Feels like92°Precip0%Wind9 mphUV8Humidity15%
Hourly temperature
100°65°
Sunrise 6:14 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue
91°66°
Wed
98°58°
Thu
97°56°
Fri
103°61°
Sat
103°59°
Sun
102°58°
Sunset
The best sunset spot on this hike is 0.4 mi in (~15 min). Leave by 7:42 PM for the 8:16 PM sunset. Back at your car by 8:41 PM — 4 min before dark.
Good to know
- Drinking water at the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from Hanna Grove Trail Trailhead
- Haystack Hill–Bob Pond, 3 summits 1.5 mi · ▲ 352 ft
- Sulphur Creek Pond–Bob Pond Loop, 4 sights 2.2 mi · ▲ 435 ft
- Diablo Foothills Regional Park Viewpoint–Buckeye Ravine Viewpoint, 5 sights 2.3 mi · ▲ 291 ft
- Bob Pond–Briones to Mt. Diablo Regional Trail Loop, 5 sights 2.4 mi · ▲ 489 ft
- Fossil Hill–Bob Pond, 7 sights 5.2 mi · ▲ 799 ft
- Buckeye Ravine Viewpoint–Bob Pond, 6 sights 5.7 mi · ▲ 1,085 ft
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Hikes near Walnut Heights, California