Historic "Old Colma Rd" (1879-1915) & Old San Pedro Mountain Road is a 5-mile out-and-back near Pedro Valley, CA. It climbs 1,161 ft, with sections as steep as 33% grade, and is mostly dirt. It scores 21/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi157 – 564 ft · steepest grade: 33%5.1 mi
Getting there
Trailhead: Old San Pedro Mountain Road 37.58262, -122.49511
Nearest town Pedro Valley, CA
Directions
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Historic "Old Colma Rd" (1879-1915) & Old San Pedro Mountain Road
5 mi · ▲ 1,161 ft · 2 hr 15 min
Elevation 158–564 ft
Out & Back
Trailhead: Old San Pedro Mountain Road · 37.58262, -122.49511
Weather Sep 20: Light drizzle, high 59°F / low 55° · precip 3% · wind 7 mph · sunrise 6:57 AM · sunset 7:12 PM
Transit-accessible: Linda Mar Boulevard & Seville Drive stop 663 m from the trailhead
- Start on Old San Pedro Mountain Road, heading SE.
- 1.1 miTurn right, heading NW.
- 0.8 miTurn left, heading NW.
- 0.6 miContinue straight onto Historic "Old Colma Rd" (1879-1915), heading NW.
- 150 ftContinue straight onto Devil’s Slide Trail, heading SW.
- 50 ftContinue straight onto Historic "Old Colma Rd" (1879-1915), heading SW.
- 50 ftReach Old San Pedro Mountain Road, then turn around and head back the way you came.
- 50 ftContinue straight onto Devil’s Slide Trail, heading E.
- 50 ftContinue straight onto Historic "Old Colma Rd" (1879-1915), heading E.
- 0.6 miTurn right, heading SE.
- 0.8 miTurn left onto Old San Pedro Mountain Road, heading W.
- 1.1 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
75% dirt25% unspecified
Weather
Light drizzleTemperature 59°F55°
Precip3%Wind7 mphUV5Humidity100%
Hourly temperature
65°50°
Sunrise 6:57 AM12 AM3 AM9 AM12 PM3 PMSunset 7:12 PM
Mon
58°57°
Tue
71°57°
Wed
81°54°
Thu
69°55°
Fri
69°56°
Sat
69°54°
Sunset
The best sunset spot on this hike is 2.4 mi in (~77 min). Leave by 5:34 PM for the 7:12 PM sunset. Back at your car by 8:34 PM, after dark — bring a headlamp.
Good to know
- Transit-accessible: Linda Mar Boulevard & Seville Drive stop 663 m from the trailhead
Other ways to reach this destination
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