Summit Rock–Service Road Trail, 3 sights is a 6-mile out-and-back in Castle Rock State Park near San Lorenzo Park, CA. The route reaches Summit Rock at the turnaround, 3 miles in. It climbs 1,277 ft, with sections as steep as 17% grade, and is mostly dirt. It scores 36/100 on the Ambleway Wildness scale: green fringe.
Elevation
0 mi2,385 – 3,025 ft · steepest grade: 17%6.4 mi
Getting there
Trailhead: Unnamed 37.23434, -122.10417
Nearest town San Lorenzo Park, CA
Directions
AMBLEWAYwww.ambleway.com
Summit Rock–Service Road Trail, 3 sights
6 mi · ▲ 1,277 ft · 2 hr 38 min
Elevation 2,387–3,026 ft
Out & Back · Castle Rock State Park
Trailhead: 37.23434, -122.10417
Weather Aug 3: Clear, high 87°F / low 71° · precip 0% · wind 4 mph · sunrise 6:16 AM · sunset 8:15 PM
- Start at the trailhead, heading S.
- 0.3 miTurn right onto Goat Rock Trail, heading W.
- 0.1 miBear right onto Ridge Trail, heading W.
- 1.3 miTurn right onto Service Road Trail, heading W.
- 0.1 miContinue straight onto Loughry Woods Trail, heading NE.
- 50 ftTurn right onto Service Road Trail, heading NE.
- 0.8 miTurn right, heading NE.
- 450 ftContinue straight onto Skyline Trail, heading NE.
- 0.3 miReach Summit Rock, then turn around and head back the way you came.
- 0.3 miContinue straight onto Service Road Trail, heading SW.
- 450 ftBear right, heading SW.
- 0.8 miTurn left onto Loughry Woods Trail, heading W.
- 50 ftContinue straight onto Service Road Trail, heading W.
- 0.1 miTurn left onto Ridge Trail, heading NW.
- 1.3 miBear left onto Goat Rock Trail, heading SE.
- 0.1 miTurn left, heading NE.
- 0.2 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
91% dirt9% unspecified
Weather
ClearTemperature 87°F71°
Precip0%Wind4 mphUV8Humidity33%
Hourly temperature
90°70°
Sunrise 6:16 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:15 PM
Tue
85°66°
Wed
82°50°
Thu
93°50°
Fri
98°56°
Sat
97°59°
Sun
91°50°
Sunset
The best sunset spot on this hike is right at the trailhead, so there is no walk out. Be there by 7:55 PM to have the sun's last 20 minutes of sky before it sets at 8:15 PM. Your car is right there — dark at 8:44 PM.
Other ways to reach this destination
More from this trailhead
- Goat Rock & Ridge Trail via Saratoga Gap Trail 2.5 mi · ▲ 493 ft
- Ridge Trail 3.4 mi · ▲ 687 ft
- Ridge Trail 3.4 mi · ▲ 687 ft
- Ridge Trail 3.6 mi · ▲ 687 ft
- Saratoga Gap Trail via Ridge Trail 4.4 mi · ▲ 1,006 ft
- Service Road Trail–Skyline Trail, 3 sights 7.1 mi · ▲ 1,625 ft
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