Mount Diablo State Park

Red Road Loop

9.5 mi · ▲ 1,737 ft · 4 hr 2 min

Red Road Loop is a 9.5-mile loop in Mount Diablo State Park near Cowell, CA. It climbs 1,737 ft, with sections as steep as 32% grade. It scores 70/100 on the Ambleway Wildness scale: backcountry feel.

Elevation

0 mi381 – 1,293 ft · steepest grade: 32%9.8 mi

Getting there

Trailhead: Unnamed 37.90191, -121.99331
Nearest town Cowell, CA

Directions

AMBLEWAYwww.ambleway.com

Red Road Loop

9.5 mi · ▲ 1,737 ft · 4 hr 2 min

Elevation 380–1,293 ft

Loop · Mount Diablo State Park

Trailhead: 37.90191, -121.99331

Weather Aug 3: Mostly clear, high 101°F / low 62° · precip 0% · wind 4 mph · sunrise 6:14 AM · sunset 8:16 PM

  1. Start at the trailhead, heading NE.
  2. 1.8 miContinue straight onto Red Road, heading W.
  3. 0.6 miReach Red Road, then turn around and head back the way you came.
  4. 150 ftBear right, heading NW.
  5. 1.6 miTurn right, heading E.
  6. 0.5 miBear left, heading SE.
  7. 50 ftTurn left, heading E.
  8. 1.3 miSharp left, heading NE.
  9. 0.7 miTurn left, heading NW.
  10. 500 ftSharp left, heading W.
  11. 0.3 miBear left, heading SW.
  12. 100 ftTurn right, heading SW.
  13. 0.9 miSharp left, heading NW.
  14. 0.3 miTurn right, heading S.
  15. 0.8 miTurn left, heading W.
  16. 0.1 miTurn right, heading S.
  17. 0.3 miThe loop closes back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Weather

Mostly clearTemperature 101°F62°
Precip0%Wind4 mphUV8Humidity32%
Hourly temperature
105°60°
Sunrise 6:14 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue 91°63°
Wed 90°55°
Thu 98°56°
Fri 103°62°
Sat 103°60°
Sun 102°59°

Sunset

The best sunset spot on this hike is 1.1 mi in (~41 min). Leave by 7:15 PM for the 8:16 PM sunset. Back at your car by 9:00 PM, after dark — bring a headlamp.

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