Ewing Hill–Black Mountain, 8 sights is a 9.7-mile out-and-back in Rancho San Antonio Open Space Preserve near Los Altos Hills, CA. The route passes Mary Davey Memorial, Ewing Hill and Black Mountain before reaching Monte Bello Road (Trail) Viewpoint at the turnaround, 4.9 miles in. It climbs 2,490 ft, with sections as steep as 19% grade. It scores 38/100 on the Ambleway Wildness scale: green fringe.
Elevation
0 mi459 – 2,815 ft · steepest grade: 19%10.0 mi
Getting there
Trailhead: Rhus Ridge Trail 37.35200, -122.13796
Nearest town Los Altos Hills, CA
Directions
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Ewing Hill–Black Mountain, 8 sights
9.7 mi · ▲ 2,490 ft · 4 hr 29 min
Elevation 459–2,815 ft
Out & Back · Rancho San Antonio Open Space Preserve
Trailhead: Rhus Ridge Trail · 37.35200, -122.13796
Weather Aug 4: sunrise 6:16 AM · sunset 8:15 PM
No dogs on part of this route · Parking lot at the trailhead
- Start on Rhus Ridge Trail, heading SE.
- 0.9 miTurn right onto Black Mountain Trail, heading W.
- 50 ftPass Mary Davey Memorial.
- 0.7 miPass Ewing Hill.
- 0.2 miTurn left onto Creek Trail, heading S.
- 50 ftContinue straight onto Black Mountain Trail, heading S.
- 2 miContinue straight onto Quarry Trail, heading S.
- 50 ftBear right onto Black Mountain Trail, heading S.
- 0.9 miTurn right, heading S.
- 450 ftBear left, heading SW.
- 50 ftContinue straight onto Monte Bello Road (Trail), heading SW.
- 250 ftTurn right, heading S.
- 50 ftPass Black Mountain.
- 50 ftPass Monte Bello Road (Trail) Viewpoint.
- 100 ftReach Ewing Hill, then turn around and head back the way you came.
- 350 ftBear right, heading S.
- 450 ftTurn left onto Black Mountain Trail, heading NE.
- 0.9 miBear left onto Quarry Trail, heading NE.
- 50 ftContinue straight onto Black Mountain Trail, heading NE.
- 2 miContinue straight onto Creek Trail, heading NE.
- 50 ftTurn right onto Black Mountain Trail, heading NE.
- 0.9 miTurn left onto Rhus Ridge Trail, heading SE.
- 0.9 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
44% dirt1% gravel55% unspecified
Weather
Sunrise 6:16 AMSunset 8:15 PM
Sunset
The best sunset spot on this hike is 3.0 mi in (~111 min). Leave by 6:04 PM for the 8:15 PM sunset. Back at your car by 9:42 PM, after dark — bring a headlamp.
Good to know
- No dogs on part of this route
- Parking lot at the trailhead
Other ways to reach this destination
More from Rhus Ridge Trail Trailhead
- Ewing Hill–Mary Davey Memorial, 4 sights 3.7 mi · ▲ 812 ft
- Mary Davey Memorial–Chamise Trail, 4 sights 7.4 mi · ▲ 1,488 ft
- High Meadow Viewpoint–Mary Davey Memorial, 5 sights 9.4 mi · ▲ 1,885 ft
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