Shell Ridge Open Space

Sulphur Creek Pond & Sugarloaf-Shell Ridge Trail via Briones to Mt. Diablo Regional Trail

3.4 mi · ▲ 848 ft · 1 hr 33 min

Sulphur Creek Pond & Sugarloaf-Shell Ridge Trail via Briones to Mt. Diablo Regional Trail is a 3.4-mile out-and-back in Shell Ridge Open Space near Walnut Heights, CA. The route reaches Sulphur Creek Pond at the turnaround, 1.7 miles in. It climbs 848 ft, with sections as steep as 16% grade, and is mostly dirt. It scores 64/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi358 – 840 ft · steepest grade: 16%3.5 mi

Getting there

Trailhead: Unnamed 37.88769, -122.01444
Nearest town Walnut Heights, CA

Directions

AMBLEWAYwww.ambleway.com

Sulphur Creek Pond & Sugarloaf-Shell Ridge Trail via Briones to Mt. Diablo Regional Trail

3.4 mi · ▲ 848 ft · 1 hr 33 min

Elevation 358–841 ft

Out & Back · Shell Ridge Open Space

Trailhead: 37.88769, -122.01444

Weather Aug 3: Mostly clear, high 101°F / low 63° · precip 0% · wind 9 mph · sunrise 6:14 AM · sunset 8:16 PM

  1. Start at the trailhead, heading SE.
  2. 200 ftBear left onto Sugarloaf-Shell Ridge Trail, heading E.
  3. 0.4 miTurn right onto Briones to Mt. Diablo Regional Trail, heading E.
  4. 0.2 miTurn left onto Ridge Top Trail, heading NE.
  5. 0.7 miTurn left onto Costanoan Trail, heading NW.
  6. 350 ftBear left onto Ridge Top Trail, heading N.
  7. 50 ftTurn right onto Sulfur Creek Trail, heading NW.
  8. 300 ftBear left, heading N.
  9. 0.3 miReach Sulphur Creek Pond, then turn around and head back the way you came.
  10. 0.4 miTurn left onto Ridge Top Trail, heading SE.
  11. 50 ftBear right onto Costanoan Trail, heading SE.
  12. 350 ftTurn right onto Ridge Top Trail, heading SE.
  13. 0.7 miTurn right onto Briones to Mt. Diablo Regional Trail, heading S.
  14. 0.2 miTurn left onto Sugarloaf-Shell Ridge Trail, heading W.
  15. 0.4 miBear right, heading SW.
  16. 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

74% dirt26% unspecified

Weather

Mostly clearTemperature 101°F63°
Feels like88°Precip0%Wind9 mphUV8Humidity19%
Hourly temperature
105°60°
Sunrise 6:14 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue 91°62°
Wed 98°55°
Thu 98°56°
Fri 103°61°
Sat 103°59°
Sun 102°58°

Sunset

The best sunset spot on this hike is 1.1 mi in (~42 min). Leave by 7:14 PM for the 8:16 PM sunset. Back at your car by 9:00 PM, after dark — bring a headlamp.

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