Mount Diablo State Park

Clayton Oaks Road & Olympia Trail

7.9 mi · ▲ 2,528 ft · 3 hr 54 min

Clayton Oaks Road & Olympia Trail is a 7.9-mile out-and-back in Mount Diablo State Park near Marsh Creek Springs, CA. It climbs 2,528 ft, with sections as steep as 29% grade. It scores 39/100 on the Ambleway Wildness scale: green fringe.

Elevation

0 mi564 – 2,005 ft · steepest grade: 29%7.9 mi

Getting there

Trailhead: Olympia Trail 37.90992, -121.88905
Nearest town Marsh Creek Springs, CA

Directions

AMBLEWAYwww.ambleway.com

Clayton Oaks Road & Olympia Trail

7.9 mi · ▲ 2,528 ft · 3 hr 54 min

Elevation 564–2,005 ft

Out & Back · Mount Diablo State Park

Trailhead: Olympia Trail · 37.90992, -121.88905

Weather Aug 3: Clear, high 97°F / low 66° · precip 0% · wind 6 mph · sunrise 6:13 AM · sunset 8:16 PM

  1. Start at the trailhead, heading W.
  2. 50 ftContinue straight onto Olympia Trail, heading SW.
  3. 2.3 miBear left onto Clayton Oaks Road, heading NW.
  4. 1.7 miReach Olympia Trail, then turn around and head back the way you came.
  5. 1.7 miBear right onto Cardinet Oaks Road, heading S.
  6. 0.9 miContinue straight onto Olympia Trail, heading E.
  7. 1.4 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

44% dirt56% unspecified

Weather

ClearTemperature 97°F66°
Feels like81°Precip0%Wind6 mphUV8Humidity30%
Hourly temperature
100°65°
Sunrise 6:13 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue 90°63°
Wed 92°54°
Thu 101°57°
Fri 105°63°
Sat 105°61°
Sun 104°59°

Sunset

The best sunset spot on this hike is 1.2 mi in (~57 min). Leave by 6:58 PM for the 8:16 PM sunset. Back at your car by 9:00 PM, after dark — bring a headlamp.

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