Mount Diablo State Park

Cardinet Oaks Road & Mount Olympia Road

5.3 mi · ▲ 1,301 ft · 2 hr 25 min

Cardinet Oaks Road & Mount Olympia Road is a 5.3-mile out-and-back in Mount Diablo State Park near Clayton, CA. It climbs 1,301 ft, with sections as steep as 32% grade, and is mostly dirt. It scores 53/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi1,362 – 2,536 ft · steepest grade: 32%5.3 mi

Getting there

Trailhead: Cardinet Oaks Road 37.91059, -121.90254
Nearest town Clayton, CA

Directions

AMBLEWAYwww.ambleway.com

Cardinet Oaks Road & Mount Olympia Road

5.3 mi · ▲ 1,301 ft · 2 hr 25 min

Elevation 1,362–2,537 ft

Out & Back · Mount Diablo State Park

Trailhead: Cardinet Oaks Road · 37.91059, -121.90254

Weather Aug 3: Clear, high 97°F / low 74° · precip 0% · wind 10 mph · sunrise 6:13 AM · sunset 8:16 PM

  1. Start on Cardinet Oaks Road, heading SW.
  2. 1.6 miSharp right onto Mount Olympia Road, heading S.
  3. 1 miReach Cardinet Oaks Road, then turn around and head back the way you came.
  4. 1 miSharp left onto Cardinet Oaks Road, heading SW.
  5. 1.6 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

70% dirt30% unspecified

Weather

ClearTemperature 97°F74°
Feels like86°Precip0%Wind10 mphUV8Humidity23%
Hourly temperature
100°70°
Sunrise 6:13 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue 94°74°
Wed 94°58°
Thu 100°56°
Fri 103°62°
Sat 104°60°
Sun 103°58°

Sunset

The best sunset spot on this hike is right at the trailhead, so there is no walk out. Be there by 7:56 PM to have the sun's last 20 minutes of sky before it sets at 8:16 PM. Your car is right there — dark at 8:45 PM.

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