4.4
(11)
1,699
runners
92
runs
Jogging in El Sereno Open Space Preserve offers diverse landscapes within the Santa Cruz Mountains, centered around the 2,500-foot Mount El Sereno. The terrain ranges from foothills to steep slopes, characterized by exposed chaparral communities, meadows at higher elevations, and some shaded areas near creeks. Many trails are wide fire roads, providing varied terrain from moderate climbs to challenging ascents, suitable for different fitness levels. Panoramic views of Silicon Valley, Lexington Reservoir, and Sierra Azul are accessible from various points.
β¦Last updated: May 10, 2026
1
runners
11.4km
01:34
400m
400m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
1
runners
10.6km
01:16
310m
310m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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5.0
(1)
63
runners
6.52km
00:49
160m
160m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
20
runners
15.2km
01:54
420m
420m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
10
runners
5.16km
00:39
180m
180m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around El Sereno Open Space Preserve
The overlook here is a very nice place to stop for a break or take a long picnic. In a small grass clearing you can see the entirety of San Jose and even across to the mountains on the other side of the valley.
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There is a nice overlook and picnic spot here with plenty of shade. The trail up to this point is gradual in nature, and depending on fitness level, never really gets challenging. Great for an uphill run where you want to keep a steady pace.
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El Sereno Preserve is named after the Mount El Sereno sitting at an elevation of 2,500 feet. This area gives rewarding views of the cities of Saratoga and the western area of Los Gatos. Spanning 1,614 acres, the preserve features seven miles of wide, gradual trails open for various activities such as hiking, biking, dog walking, and designated horseback riding.
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The summit of Saint Josephs Hill offers views of Los Gatos Creek valley into Silicon Valley and of the Lexington Reservoir. A couple benches and a fence mark the summit of the hill and serve as a good spot for a break while you take in the view.
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Lexington Reservoir County Park is 950 acres, and home to the Lexington Reservoir. It's a short drive from the urban area of the Town of Los Gatos. The reservoir and the park are open year round from 8:00 a.m. until sunset, and accessible from Highway 17.
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El Sereno Open Space Preserve offers a wide selection of nearly 90 running routes. These range from easy paths to more challenging ascents, catering to various fitness levels.
Yes, there are 8 easy running routes perfect for beginners or those looking for a less strenuous jog. Many trails are wide fire roads with gradual slopes, making them accessible. For example, the Manzanita and Jones Trail Loop is a moderate option that offers a pleasant experience.
The terrain in El Sereno Open Space Preserve is diverse, rising from foothills to steep slopes. You'll primarily encounter exposed chaparral communities, with meadows at higher elevations and some shaded areas near creeks. Many trails are wide fire roads, offering varied surfaces from moderate climbs to challenging ascents. You can expect fragrant smells of California bay laurel, chamise, and coyote bush along the way.
Yes, dogs are welcome on all trails within El Sereno Open Space Preserve, provided they are kept on a leash. This makes it a great spot for runners who enjoy bringing their canine companions along.
El Sereno Open Space Preserve is renowned for its spectacular panoramic views. From various points, including the Montevina Ridge and Aquinas Trails, you can enjoy expansive vistas of Silicon Valley, Lexington Reservoir, Sierra Azul, and even the distant Monterey peninsula. The Vista Point (Overlook Trail) is a particularly popular spot for breathtaking scenery.
Absolutely. For experienced runners seeking a strenuous workout, El Sereno Open Space Preserve offers 22 difficult routes. The Aquinas Trail, for instance, provides a significant elevation gain, climbing from just over 1,000 feet to nearly 2,600 feet over 3.5 miles. The Bay Area Ridge Trail: El Sereno Loop is another difficult option with expansive views.
While the trails are mostly exposed and can be hot in the summer, spring and fall generally offer the most pleasant temperatures for jogging. Early mornings or late afternoons are also recommended during warmer months to avoid the midday heat. The preserve provides excellent opportunities for scenic and invigorating runs year-round.
Yes, many of the running routes in El Sereno Open Space Preserve are loops, offering a varied experience without retracing your steps. Popular loop options include the Los Gatos Creek and Jones Trail Loop and the Overlook Trail and Saratoga-Los Gatos Road Loop.
Beyond the stunning views, joggers can appreciate the diverse chaparral communities and meadows. The preserve is named after the 2,500-foot Mount El Sereno, which forms a prominent ridge. You can also explore the Aquinas Trail, known for its challenging ascent and rewarding scenery.
The running routes in El Sereno Open Space Preserve are highly rated by the komoot community, with an average score of 4.1 stars from over 10 reviews. Reviewers often praise the diverse terrain, the rewarding panoramic views, and the well-maintained fire roads that make for excellent running surfaces.
The preserve is primarily accessed by car, and direct public transport options to the trailheads are limited. It's advisable to check local transit schedules for any routes that might connect to the vicinity, but a personal vehicle is generally recommended for convenience.
Parking is available at designated trailheads around the preserve. It's recommended to check specific trailhead information for the route you plan to run to confirm parking availability and any potential restrictions.
Given that many trails are exposed, especially during warmer months, it's crucial to bring plenty of water to stay hydrated. Sun protection, such as a hat, sunglasses, and sunscreen, is also highly recommended. Appropriate running shoes for varied terrain, including fire roads and some steeper sections, will ensure a comfortable experience.


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