Round Top–Quarry Road, 4 sights is a 3.7-mile out-and-back in Sibley Volcanic Regional Preserve near Montclair, CA. The route reaches Round Top at the turnaround, 1.9 miles in. It climbs 999 ft, with sections as steep as 24% grade. It scores 10/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi1,011 – 1,739 ft · steepest grade: 24%4.0 mi
Getting there
Trailhead: Quarry Road 37.85610, -122.20624
Nearest town Montclair, CA
Directions
AMBLEWAYwww.ambleway.com
Round Top–Quarry Road, 4 sights
3.7 mi · ▲ 999 ft · 1 hr 44 min
Elevation 1,011–1,740 ft
Out & Back · Sibley Volcanic Regional Preserve
Trailhead: Quarry Road · 37.85610, -122.20624
Weather Aug 4: sunrise 6:15 AM · sunset 8:16 PM
Transit-accessible: Tunnel Road & Skyline Boulevard stop 686 m from the trailhead · Toilets at the trailhead · Parking lot at the trailhead
- Start on Quarry Road, heading SE.
- 0.4 miTurn right onto Quarry Trail, heading SE.
- 0.4 miContinue straight onto Volcanic Trail, heading SE.
- 0.1 miContinue straight onto Round Top Loop Trail, heading SE.
- 0.6 miTurn right, heading SW.
- 150 ftBear right, heading W.
- 0.3 miReach Round Top, then turn around and head back the way you came.
- 0.3 miSharp right, heading NW.
- 350 ftContinue straight onto Round Top Loop Trail (Bay Area Ridge Trail), heading NW.
- 0.1 miContinue straight onto Skyline Trail, heading W.
- 50 ftBear right, heading W.
- 0.6 miBear right, heading NW.
- 0.2 miTurn left onto Quarry Trail, heading N.
- 100 ftTurn left onto Quarry Road, heading N.
- 0.4 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
59% dirt33% paved8% unspecified
Weather
Sunrise 6:15 AMSunset 8:16 PM
Sunset
The best sunset spot on this hike is 0.6 mi in (~25 min). Leave by 7:31 PM for the 8:16 PM sunset. Back at your car by 8:46 PM, after dark — bring a headlamp.
Good to know
- Transit-accessible: Tunnel Road & Skyline Boulevard stop 686 m from the trailhead
- Toilets at the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from Quarry Road Trailhead
- Quarry Road–Quarry Trail, 5 sights 3.2 mi · ▲ 792 ft
- Volcanic Peak–Quarry Road, 5 sights 3.6 mi · ▲ 635 ft
- Huckleberry Botanic Regional Preserve Viewpoint–Quarry Road, 4 sights 5.9 mi · ▲ 1,728 ft
- Lower Huckleberry Loop Trail–Quarry Road, 4 sights 6.4 mi · ▲ 1,808 ft
- Chaparral Peak–Quarry Road, 3 sights 6.9 mi · ▲ 1,310 ft
- Upper Huckleberry Viewpoint–Quarry Road, 5 sights 7 mi · ▲ 1,904 ft
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