Green Ranch Road–Oak Knoll Trail, 3 sights is a 4.2-mile out-and-back in Mount Diablo State Park near Rock City, CA. It climbs 1,092 ft, with sections as steep as 18% grade. It scores 81/100 on the Ambleway Wildness scale: genuinely wild.
Elevation
0 mi2,165 – 2,756 ft · steepest grade: 18%4.4 mi
Getting there
Trailhead: Summit Trail 37.86563, -121.92970
Nearest town Rock City, CA
Directions
AMBLEWAYwww.ambleway.com
Green Ranch Road–Oak Knoll Trail, 3 sights
4.2 mi · ▲ 1,092 ft · 1 hr 57 min
Elevation 2,165–2,755 ft
Out & Back · Mount Diablo State Park
Trailhead: Summit Trail · 37.86563, -121.92970
Weather Aug 3: Clear, high 93°F / low 76° · precip 0% · wind 7 mph · sunrise 6:13 AM · sunset 8:16 PM
Toilets at the trailhead · Drinking water at the trailhead · Parking lot at the trailhead
- Start on Summit Trail, heading N.
- 0.5 miTurn right onto Juniper Trail, heading NE.
- 50 ftBear right onto Summit Trail, heading NE.
- 0.1 miSharp left onto Oak Knoll Trail, heading SE.
- 0.6 miBear left onto Green Ranch Road, heading E.
- 0.9 miReach Summit Trail, then turn around and head back the way you came.
- 0.9 miBear right onto Oak Knoll Trail, heading W.
- 0.6 miSharp right, heading S.
- 0.1 miBear left onto Juniper Trail, heading NW.
- 50 ftTurn left onto Summit Trail, heading NW.
- 0.5 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
41% dirt24% gravel35% unspecified
Weather
ClearTemperature 93°F76°
Feels like79°Precip0%Wind7 mphUV8Humidity19%
Hourly temperature
95°75°
Sunrise 6:13 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Tue
87°72°
Wed
89°54°
Thu
96°52°
Fri
100°58°
Sat
100°56°
Sun
100°54°
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.
Good to know
- Toilets at the trailhead
- Drinking water at the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
Get outside more
A wild hike near Rock City, emailed to you once a week.
Hikes near Rock City, California