Windy Hill Open Space Preserve

Portola Valley, San Mateo County, CA

EntryFree entry

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ParkingNo parking fee

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DogsOn leash, designated trails

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HoursSunrise to sunset ±30 min

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Size: 1,286 acres Source
Managed by: Midpeninsula Regional Open Space District

About Windy Hill Open Space Preserve

A 1,414-acre preserve of open grassland ridges and forests of redwood, fir, and oak. Source

Windy Hill is named for its distinctive, breezy grass-covered hilltop, which can be seen from many areas of the peninsula. The 1,414-acre preserve features open grassland ridges and forests of redwood, fir, and oak.

From the official park page · checked Oct 15, 2026

Facilities

Drinking Water
Picnic Area
Restrooms
Tennis Courts

Facility details: OpenStreetMap, official park information

Sunrise & sunset

Windy Hill Open Space Preserve hours follow the sun (Sunrise to sunset ±30 min). Mid-month times for this location:

Month	Sunrise	Sunset
Jan	7:22 a.m.	5:13 p.m.
Feb	6:59 a.m.	5:47 p.m.
Mar	7:21 a.m.	7:15 p.m.
Apr	6:35 a.m.	7:42 p.m.
May	6:00 a.m.	8:09 p.m.
Jun	5:47 a.m.	8:30 p.m.
Jul	5:59 a.m.	8:30 p.m.
Aug	6:24 a.m.	8:03 p.m.
Sep	6:49 a.m.	7:18 p.m.
Oct	7:15 a.m.	6:33 p.m.
Nov	6:47 a.m.	4:59 p.m.
Dec	7:15 a.m.	4:52 p.m.

Calculated from the park's coordinates (NOAA solar equations), Pacific time.

Windy Hill Open Space Preserve at a glance

PParking · 6
WCRestrooms · 2
WDrinking water · 1
Named trails · 9

Outline: CPAD. Points and trail lines: OpenStreetMap contributors. Not for navigation.

Trails

Trail	Mapped length	Elevation	Surface & uses
Spring Ridge Trail	2.8 mi	1,235 ft up & down540–1,822 ft	BikesHorses
Razorback Ridge Trail	2.7 mi	1,537 ft up & down811–2,031 ft	No bikesHorsesNo dogs
Hamms Gulch Trail	2.7 mi	1,347 ft up & down654–1,800 ft	UnpavedNo bikesHorsesBikes
Lost Trail	2.4 mi	934 ft up & down1,619–1,855 ft	No bikesHorsesNo dogsUnpaved
Anniversary Trail	1.1 mi	265 ft up & down1,780–1,921 ft	BikesHorsesNo bikesUnpaved
Betsy Crowder Trail	0.6 mi	215 ft up & down559–784 ft	UnpavedNo bikes
Meadow Trail	0.5 mi	205 ft up & down704–934 ft	BikesHorses
Lower Meadow Trail	0.1 mi	50 ft up & down625–687 ft	BikesHorses
Sequoias Trail	0.1 mi	16 ft up & down669–696 ft	No bikesHorses

Trail names and mapped lengths come from OpenStreetMap; lengths count only the part inside the park boundary. Up-and-down totals (climbing plus descent, one way) and elevation ranges are estimates from USGS 3DEP elevation (about 15 m grid) sampled along the mapped line. Use the official guide map for the route and current closures.