AMBLEWAY Wildest hikes

Mount Diablo State Park

Borges Ranch Trail–Briones to Mt. Diablo Regional Trail, 3 sights

12.8 mi · ▲ 2,292 ft · 5 hr 25 min

Borges Ranch Trail–Briones to Mt. Diablo Regional Trail, 3 sights is a 12.8-mile out-and-back in Mount Diablo State Park near Rock City, CA. It climbs 2,292 ft, with sections as steep as 16% grade, and is mostly dirt. It scores 76/100 on the Ambleway Wildness scale: genuinely wild.

Elevation

0 mi433 – 1,752 ft · steepest grade: 16%13.3 mi

Getting there

Trailhead: Trail Through Time 37.85019, -121.93391
Nearest town Rock City, CA
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Directions

AMBLEWAYwww.ambleway.com

Borges Ranch Trail–Briones to Mt. Diablo Regional Trail, 3 sights

12.8 mi · ▲ 2,292 ft · 5 hr 25 min

Elevation 434–1,752 ft

Out & Back · Mount Diablo State Park

Trailhead: Trail Through Time · 37.85019, -121.93391

Weather Aug 3: Clear, high 97°F / low 63° · precip 0% · wind 8 mph · sunrise 6:14 AM · sunset 8:16 PM

Toilets at the trailhead · Drinking water at the trailhead · Parking lot at the trailhead

  1. Start on Trail Through Time, heading NW.
  2. 0.2 miBear left onto Wall Point Road, heading NW.
  3. 1.1 miTurn left onto Secret Trail, heading NW.
  4. 50 ftTurn right onto Wall Point Road, heading NW.
  5. 2.2 miContinue straight onto Briones to Mt. Diablo Regional Trail, heading NW.
  6. 0.3 miBear left, heading N.
  7. 1.4 miBear left, heading NW.
  8. 0.1 miBear right, heading NW.
  9. 100 ftContinue straight onto Borges Ranch Trail, heading N.
  10. 500 ftBear left, heading NW.
  11. 250 ftContinue straight onto Foothills Trail, heading NW.
  12. 0.2 miTurn right onto Sugarloaf-Shell Ridge Trail, heading SW.
  13. 0.7 miReach Trail Through Time, then turn around and head back the way you came.
  14. 0.7 miTurn left onto Foothills Trail, heading E.
  15. 0.2 miContinue straight onto Borges Ranch Trail, heading NE.
  16. 0.3 miBear right onto Briones to Mt. Diablo Regional Trail, heading SE.
  17. 0.8 miBear right, heading SE.
  18. 0.9 miContinue straight onto Wall Point Road, heading SE.
  19. 2.2 miTurn left onto Secret Trail, heading SE.
  20. 50 ftTurn right onto Wall Point Road, heading SE.
  21. 1.1 miBear right onto Trail Through Time, heading NE.
  22. 500 ftArrive back at the trailhead.

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

Trail map, photos and weather for this hike: www.ambleway.com/hikes/franco-pond-franco-pond-out-back-21-km-fb4f

Trail surface

96% dirt4% unspecified

Weather

ClearTemperature 97°F63°
Feels like84°Precip0%Wind8 mphUV8Humidity18%
Hourly temperature
100°60°
Sunrise 6:14 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue 87°65°
Wed 90°56°
Thu 98°54°
Fri 102°60°
Sat 102°58°
Sun 102°56°

Sunset

The best sunset spot on this hike is 0.0 mi in (~1 min). Leave by 7:55 PM for the 8:16 PM sunset. Back at your car by 8:32 PM — 13 min before dark. Car visible from the viewpoint

More sunset hikes nearby

Good to know

  • Toilets at the trailhead
  • Drinking water at the trailhead
  • Parking lot at the trailhead

Other ways to reach this destination

More from Trail Through Time Trailhead

Hikes near Rock City, California