Windy Hill Open Space Preserve

Hamms Gulch Trail

6.9 mi · ▲ 1,279 ft · 2 hr 56 min

Hamms Gulch Trail is a 6.9-mile out-and-back in Windy Hill Open Space Preserve near Portola Valley, CA. It climbs 1,279 ft, with sections as steep as 18% grade, and is mostly dirt. It scores 35/100 on the Ambleway Wildness scale: green fringe.

Elevation

0 mi656 – 1,844 ft · steepest grade: 18%7.0 mi

Getting there

Trailhead: Unnamed 37.36753, -122.22117
Nearest town Portola Valley, CA

Directions

AMBLEWAYwww.ambleway.com

Hamms Gulch Trail

6.9 mi · ▲ 1,279 ft · 2 hr 56 min

Elevation 655–1,845 ft

Out & Back · Windy Hill Open Space Preserve

Trailhead: 37.36753, -122.22117

Weather Aug 4: sunrise 6:17 AM · sunset 8:15 PM

  1. Start at the trailhead, heading S.
  2. 150 ftTurn left onto Hamms Gulch Trail, heading E.
  3. 2.8 miTurn right onto Lost Trail, heading SW.
  4. 0.6 miContinue straight onto Anniversary Trail, heading NW.
  5. 100 ftReach the turnaround, then head back the way you came.
  6. 50 ftContinue straight onto Lost Trail, heading NW.
  7. 0.6 miTurn left onto Hamms Gulch Trail, heading NE.
  8. 2.8 miTurn right, heading W.
  9. 50 ftArrive back at the trailhead.

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

Trail surface

85% dirt15% unspecified

Weather

Sunrise 6:17 AMSunset 8:15 PM

Sunset

The best sunset spot on this hike is 3.1 mi in (~110 min). Leave by 6:05 PM for the 8:15 PM sunset. Back at your car by 9:47 PM, after dark — bring a headlamp.

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