Portola Discovery Site of San Francisco Bay & Mori Ridge Trail via Sweeney Ridge Trail is a 4.5-mile out-and-back in Sweeney Ridge (GGNRA) near Vallemar, CA. The route reaches Portola Discovery Site of San Francisco Bay at the turnaround, 2.2 miles in. It climbs 1,036 ft, with sections as steep as 21% grade, and is mostly dirt. It scores 7/100 on the Ambleway Wildness scale: paved and peopled.
Elevation
0 mi240 – 1,266 ft · steepest grade: 21%4.6 mi
Getting there
Trailhead: Mori Ridge Trail 37.61737, -122.48317
Nearest town Vallemar, CA
Directions
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Portola Discovery Site of San Francisco Bay & Mori Ridge Trail via Sweeney Ridge Trail
4.5 mi · ▲ 1,036 ft · 2 hr 1 min
Elevation 240–1,267 ft
Out & Back · Sweeney Ridge (GGNRA)
Trailhead: Mori Ridge Trail · 37.61737, -122.48317
Weather Aug 4: Partly cloudy, high 69°F / low 55° · precip 2% · wind 5 mph · sunrise 6:16 AM · sunset 8:18 PM
Transit-accessible: Westport Drive & Lundy Way stop 374 m from the trailhead · Parking lot at the trailhead
- Start on Mori Ridge Trail, heading E.
- 1.7 miBear left onto Sweeney Ridge Trail, heading S.
- 0.6 miReach Portola Discovery Site of San Francisco Bay, then turn around and head back the way you came.
- 2.2 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
78% dirt22% paved
Weather
Partly cloudyTemperature 69°F55°
Precip2%Wind5 mphUV8Humidity85%
Hourly temperature
70°55°
Sunrise 6:16 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:18 PM
Wed
71°55°
Thu
76°60°
Fri
77°59°
Sat
74°57°
Sun
69°57°
Mon
70°56°
Sunset
The best sunset spot on this hike is right at the trailhead, so there is no walk out. Be there by 7:58 PM to have the sun's last 20 minutes of sky before it sets at 8:18 PM. Your car is right there — dark at 8:46 PM.
Good to know
- Transit-accessible: Westport Drive & Lundy Way stop 374 m from the trailhead
- Parking lot at the trailhead
Other ways to reach this destination
More from Mori Ridge Trail Trailhead
- Baquiano Trail & Mori Ridge Trail via Sweeney Ridge Trail 6.4 mi · ▲ 1,409 ft
- Portola Discovery Site of San Francisco Bay–Pilarcitos Lake, 4 sights 16.1 mi · ▲ 2,676 ft
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