Overview
Foothills Open Space Preserve is a publicly accessible natural area managed by the Midpeninsula Regional Open Space District (MROSD) in the hills west of Palo Alto and Los Altos Hills on the San Francisco Peninsula. The preserve sits within the broader Santa Cruz Mountains foothills and protects a mosaic of oak woodland, chaparral, and grassland habitat.
The landscape is characterized by gentle to moderately steep terrain, seasonal streams, and sweeping views toward the San Francisco Bay on clear days. It draws hikers, trail runners, equestrians, and cyclists — particularly those looking for open space within close reach of Silicon Valley communities.
The preserve connects to a larger network of MROSD lands, making it possible to combine it with visits to adjacent or nearby preserves for longer excursions. It is a working example of the region's commitment to permanent open-space protection in one of the most developed corners of California.
Before You Go
Foothills Open Space Preserve is free to enter and requires no advance reservation for general trail access. No camping is permitted. Dogs are not allowed on most MROSD preserves, including Foothills — verify the current pet policy on the official MROSD website before your visit.
The preserve has limited on-site facilities. Parking is available at the Page Mill Road trailhead; spaces fill quickly on weekends. There are no food vendors, and shade can be sparse on exposed ridgelines, so carry adequate water.
Permits and fees
- General trail access: free (verify on the MROSD site for any updates)
- Organized group events or research activities may require a permit from MROSD — check directly with the district
What to bring
- Sufficient water (at least 2 liters per person for a full day)
- Sun protection — hats, sunscreen, long sleeves in summer
- Layered clothing; fog and wind can appear quickly in cooler months
- Trail map downloaded in advance; cell service can be unreliable in the hills
Getting There
The main access point for Foothills Open Space Preserve is off Page Mill Road in the hills above Palo Alto. The trailhead parking area is located along this winding two-lane road — verify the exact address or trailhead coordinates via the MROSD website or a mapping app before you go, as signage on the road can be easy to miss.
By car: Most visitors arrive by personal vehicle. From US Highway 101 or Interstate 280, take Page Mill Road westbound into the hills. The drive is scenic but involves sharp curves — allow more time than a flat-road estimate would suggest. Street parking outside the lot is extremely limited.
By bicycle: Experienced cyclists access the preserve via Page Mill Road or connecting routes from Palo Alto, though the climb is steep and the road has no dedicated bike lane. Check local cycling resources for route conditions.
By public transit: Direct transit access is limited. The Santa Clara Valley Transportation Authority (VTA) and SamTrans serve surrounding communities, but the final stretch to the trailhead typically requires a car, rideshare, or bicycle. Verify current routes and stops on VTA and SamTrans official sites.
Getting Around
Once inside the preserve, travel is on foot, horseback, or — on designated routes — bicycle. Trails range from wide fire roads to narrower single-track paths. The terrain is hilly and can be slippery when wet in the rainy season (roughly November through March).
Trail maps are available for download from the MROSD website and should be saved offline before arrival. Intersections are generally signed, but conditions can change after storms. Cycling is permitted on certain fire roads but not all trails — check the current trail use designations on the official MROSD map.
Things to See & Do
Hiking
The preserve's trail network offers routes suitable for a range of fitness levels, from shorter loops to multi-mile excursions that can extend into neighboring MROSD properties. The rolling oak woodland provides a quiet, uncrowded atmosphere compared with more popular Bay Area parks.
Wildlife watching
The grassland and woodland mix supports raptors (red-tailed hawk, turkey vulture, and American kestrel are commonly sighted), mule deer, coyote, and various songbirds. Morning visits tend to yield the most wildlife activity. California newts can be found near seasonal streams in winter and early spring.
Photography and nature study
Spring wildflower blooms — including lupine, poppies, and brodaea — attract photographers and botanists. The hillside vantage points offer long views across the Peninsula on days with low haze.
Equestrian use
The preserve is open to horses on most of its trails. Riders should review the MROSD trail use map in advance, as some segments have restrictions.
Connecting routes
Foothills can be linked with Rancho San Antonio Open Space Preserve via trail connections, enabling longer full-day or multi-preserve hikes. Confirm current connector trail status with MROSD before planning such a route.
Food & Drink
There are no food or drink facilities within the preserve. Pack all food and water before leaving the trailhead. The nearest dining and grocery options are in the Palo Alto and Los Altos communities downhill from the preserve on Page Mill Road and El Camino Real.
Palo Alto has a well-developed restaurant scene spanning a range of cuisines and price points. Downtown Palo Alto (University Avenue area) and California Avenue both have concentrations of cafes and restaurants suitable for a post-hike meal. Verify hours and current options locally or through a restaurant directory, as the dining landscape changes frequently.
Practical Information
Emergency contacts
- In any emergency, call 911
- MROSD Ranger Station: contact information is listed on the official MROSD website; verify the current number before your visit
Restrooms
A vault toilet is available at the Page Mill Road trailhead parking area. There are no restrooms on interior trails.
Leave No Trace
Pack out all trash. Do not pick wildflowers or disturb wildlife. Stay on designated trails to protect sensitive vegetation and prevent erosion — this is particularly important on steep slopes.
Fire safety
Open fires and smoking are prohibited throughout MROSD preserves. During periods of high fire danger, the preserve may be temporarily closed — check the MROSD website or call ahead during dry summer and fall months.
Accessibility
Some fire road sections near the trailhead are relatively flat and may be accessible with adaptive equipment, but most trails involve significant grade changes. Contact MROSD directly for the most current accessibility information.
Safety
Foothills Open Space Preserve is generally a safe recreational area, but standard backcountry precautions apply. Mountain lions are present in the Santa Cruz Mountains foothills — sightings are rare but documented. MROSD posts current wildlife advisories; read the posted signage at trailheads.
Poison oak is abundant along many trails, particularly in wooded and riparian zones. Learn to identify it before your visit and stay on the trail to minimize contact. Wear long pants and sleeves if uncertain.
Ticks are active year-round, with peak activity in spring and fall. Check yourself and companions thoroughly after any hike. Rattlesnakes may be encountered on warm days, particularly on sunny exposed trails — give them space and do not attempt to handle them.
Cell phone coverage is unreliable in parts of the preserve. Download offline maps, share your hiking plan with someone not on the trail, and carry a charged power bank.
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