AMBLEWAY Wildest hikes
Sweeney Ridge. Looking west towards the sometimes-visible Farallone Islands in the Pacific. - panoramio.jpg
Richard Wood · CC BY-SA 3.0
Sweeney Ridge (GGNRA)

Portola Discovery Site of San Francisco Bay & Sneath Lane Trail

3.5 mi · ▲ 580 ft · 1 hr 27 min

Portola Discovery Site of San Francisco Bay & Sneath Lane Trail is a 3.5-mile out-and-back in Sweeney Ridge (GGNRA) near Westborough, CA. The route reaches Portola Discovery Site of San Francisco Bay at the turnaround, 1.8 miles in. It climbs 580 ft, with sections as steep as 15% grade, and is mostly paved. It scores 8/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi610 – 1,224 ft · steepest grade: 15%3.6 mi

Getting there

Trailhead: Sneath Lane Trail 37.61922, -122.45397
Nearest town Westborough, CA
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Directions

AMBLEWAYwww.ambleway.com

Portola Discovery Site of San Francisco Bay & Sneath Lane Trail

3.5 mi · ▲ 580 ft · 1 hr 27 min

Elevation 609–1,225 ft

Out & Back · Sweeney Ridge (GGNRA)

Trailhead: Sneath Lane Trail · 37.61922, -122.45397

Weather Aug 4: Clear, high 72°F / low 52° · precip 2% · wind 3 mph · sunrise 6:17 AM · sunset 8:16 PM

Dogs allowed on leash · Transit-accessible: Sneath Lane & Monterey Drive stop 751 m from the trailhead · Parking lot at the trailhead

  1. Start on Sneath Lane Trail, heading SE.
  2. 1.7 miTurn left onto Sweeney Ridge Trail, heading S.
  3. 300 ftReach Portola Discovery Site of San Francisco Bay, then turn around and head back the way you came.
  4. 300 ftTurn right onto Sneath Lane Trail, heading N.
  5. 1.7 miArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail map, photos and weather for this hike: www.ambleway.com/hikes/portola-discovery-site-of-san-francisco-bay-out-back-6-km

Trail surface

96% paved4% dirt

Weather

ClearTemperature 72°F52°
Precip2%Wind3 mphUV8Humidity81%
Hourly temperature
75°50°
Sunrise 6:17 AM12 AM3 AM9 AM12 PM3 PM6 PMSunset 8:16 PM
Wed 64°50°
Thu 74°59°
Fri 75°57°
Sat 73°55°
Sun 68°55°
Mon 69°55°

Sunset

The best sunset spot on this hike is 1.6 mi in (~56 min). Leave by 7:00 PM for the 8:16 PM sunset. Back at your car by 9:12 PM, after dark — bring a headlamp.

More sunset hikes nearby

Good to know

  • Dogs allowed on leash
  • Transit-accessible: Sneath Lane & Monterey Drive stop 751 m from the trailhead
  • Parking lot at the trailhead

Other ways to reach this destination

More from Sneath Lane Trail Trailhead

Hikes near Westborough, California