Mount Diablo State Park

Olofson Ridge Road via Red Road

9.5 mi · ▲ 2,241 ft · 4 hr 17 min

Olofson Ridge Road via Red Road is a 9.5-mile out-and-back in Mount Diablo State Park near Cowell, CA. It climbs 2,241 ft, with sections as steep as 28% grade. It scores 67/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi486 – 1,726 ft · steepest grade: 28%9.6 mi

Getting there

Trailhead: Unnamed 37.92727, -121.97232
Nearest town Cowell, CA

Directions

AMBLEWAYwww.ambleway.com

Olofson Ridge Road via Red Road

9.5 mi · ▲ 2,241 ft · 4 hr 17 min

Elevation 487–1,726 ft

Out & Back · Mount Diablo State Park

Trailhead: 37.92727, -121.97232

Weather Sep 5: Clear, high 78°F / low 53° · precip 0% · wind 7 mph · sunrise 6:41 AM · sunset 7:35 PM

  1. Start at the trailhead, heading NW.
  2. 300 ftTurn left, heading W.
  3. 0.1 miSharp left, heading S.
  4. 0.7 miBear left, heading S.
  5. 0.3 miTurn left, heading NE.
  6. 0.2 miTurn right, heading NE.
  7. 0.3 miSharp right, heading E.
  8. 0.1 miTurn left, heading SE.
  9. 500 ftTurn right, heading E.
  10. 0.7 miSharp right onto Red Road, heading E.
  11. 0.2 miSharp left onto Olofson Ridge Road, heading SW.
  12. 0.9 miReach Olofson Ridge Road, then turn around and head back the way you came.
  13. 0.9 miTurn left onto Red Road, heading W.
  14. 2 miSharp right, heading NW.
  15. 2 miBear right, heading N.
  16. 0.9 miSharp right, heading N.
  17. 0.1 miTurn right, heading E.
  18. 250 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

3% gravel97% unspecified

Weather

ClearTemperature 78°F53°
Precip0%Wind7 mphUV7Humidity71%
Hourly temperature
80°50°
Sunrise 6:41 AM12 AM3 AM9 AM12 PM3 PMSunset 7:35 PM
Sun 73°53°
Mon 86°52°
Tue 91°59°
Wed 93°62° 15%
Thu 97°69°
Fri 83°59°

Sunset

The best sunset spot on this hike is 1.1 mi in (~37 min). Leave by 6:38 PM for the 7:35 PM sunset. Back at your car by 8:16 PM, after dark — bring a headlamp.

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