5.0
(3)
42
riders
4
rides
Gravel biking in St. Joseph'S Hill Open Space Preserve offers varied terrain and panoramic views from its 1,250 to 1,253-foot summit. The preserve features a mix of sun-exposed grasslands, chaparral, and oak woodlands, providing diverse backdrops for cycling. Trails range from wide gravel paths to doubletrack and short singletrack segments, with some sections featuring outcroppings of serpentine rock. The area provides a quick escape from urban environments, with routes that include gentle ascents and steeper, rocky sections.
Last updated: July 10, 2026
2
riders
53.1km
04:30
1,280m
1,280m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(2)
8
riders
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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2
riders
25.2km
02:07
800m
800m
The Monte Sereno Overlook – El Sereno Open Space Preserve loop from Saratoga is a demanding gravel biking adventure through the Santa Cruz Mountains. This 15.7-mile (25.2 km) route features…
6
riders
44.5km
03:32
1,190m
1,190m
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
7
riders
29.2km
02:00
380m
380m
Moderate gravel ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Popular around St. Joseph'S Hill Open Space Preserve
This is not a very exciting trail to hike. It’s pretty much a trail surrounded by thick walls of vegetation, with almost no opportunity to view your surroundings. The trail is 70% rocks/gravel, and 30% hard packed clay, so avoid wearing snickers
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If you make the summit a fantastic view awaits. Be aware the road goes down then up to the road about then up again to the summit!…
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Still one of the highest points in the Santa Cruz Mountains, even though the military graded and flattened the actual summit to create an Air Force base. The summit was cleaned of hazardous material in 2009, then carefully restored after a lot of community input. It's a lovely place to visit now!
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The trail is gravel but well paved. The view is partially blocked by trees but still pretty.
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Shannon Road starts with a gentle climb from Los Gatos Creek to Blossom Hill Park, then transitions into a steeper ascent as it leads into a rural area. The summit below Blossom Hill offers a rewarding challenge and connects to other routes in the area.
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The Hidden Springs Trail in Santa Teresa County Park is a favorite among mountain bikers seeking a challenging yet rewarding ride. This doubletrack loop winds through rolling hills and oak woodlands, with seasonal wildflowers. The trail ends with a steep half-mile climb leading to the Coyote Peak Trail. The path is rated as a blue-level trail with a black-diamond climb difficulty. It’s perfect for XC, gravel, AM, and adaptive MTB riders. Open to both directions and e-bikes (Class 1), it’s best enjoyed during early mornings or evenings to beat the heat.
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The Hidden Springs Trail in Santa Teresa County Park offers a peaceful loop through rolling hills and oak woodlands. Perfect for trail runners, it features scenic views, seasonal wildflowers, and moderate climbs. Early mornings or evenings are ideal to avoid the heat and enjoy the quiet beauty of the landscape.
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Three of the most popular area trails come together here; depending on how ambitious you are, you might return to this juncture several times as you crank through the forested hills.
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St. Joseph's Hill Open Space Preserve offers a selection of traffic-free gravel bike routes. Our guide features 5 distinct routes that allow you to explore the preserve's diverse terrain without vehicle interference.
The preserve offers varied terrain, from wide gravel paths and doubletrack to short, playful singletrack segments like the Serpentine Trail. You'll encounter a mix of sun-exposed grasslands, chaparral, and oak woodlands. Some sections can be quite steep and rocky, providing a good workout.
Yes, many of the routes in St. Joseph's Hill Open Space Preserve feature significant elevation gains. For example, the Blossom Hill - Shannon Road – Mine Hill Trailhead loop includes over 1280 meters of climbing, and the Mount Umunhum Road – Mount Umunhum loop has nearly 1190 meters of ascent, offering a rewarding challenge for experienced riders.
The preserve is renowned for its panoramic views. From the summit of St. Joseph's Hill, you can enjoy expansive vistas of the Santa Clara Valley, Lexington Reservoir, and the distant El Sereno and Sierra Azul Preserves. Trails also offer views of the reservoir and the forested slopes of the Santa Cruz Mountains. Look out for unique serpentine rock outcroppings, especially along the Manzanita Trail, and diverse vegetation including manzanita, eucalyptus, and various oaks. You can find more details about specific viewpoints like the View of Los Gatos and Lexington Reservoir from St. Joseph's Hill and the View of Silicon Valley from St. Joseph's Hill.
The preserve is easily accessible, particularly from the north through Los Gatos's Novitiate Park, which is just a mile from downtown Los Gatos. This area typically offers parking options for visitors.
While the preserve is enjoyable year-round, spring and fall generally offer the most pleasant conditions for gravel biking, with milder temperatures and vibrant natural scenery. Summers can be hot, especially in exposed areas, and winters can bring rain, making some trails muddy.
Some sections of the preserve offer gentler terrain and shorter loop options, which might be suitable for families with older children who are comfortable with varied surfaces and some elevation. However, many routes, such as the Mount Umunhum Road – Guadalupe Reservoir loop, are rated as 'difficult' due to significant climbs and distances, making them more suitable for experienced riders.
St. Joseph's Hill Open Space Preserve is generally dog-friendly, but specific rules regarding dogs on trails, especially multi-use trails, may apply. It's always best to check the official Midpeninsula Regional Open Space District website for the most current regulations regarding dogs on trails to ensure a pleasant experience for everyone.
The komoot community highly rates the preserve, with an average score of 3.5 stars. Riders frequently praise the stunning panoramic views from the summit, the challenging yet rewarding climbs, and the opportunity to experience diverse terrain, from wide gravel to playful singletrack, all within a traffic-free environment.
Yes, the preserve holds historical significance. You can still find remnants of historic vineyards within the preserve, hinting at its past as part of a Jesuit Novitiate. These elements add an interesting layer to your ride through the natural landscape.
Yes, the preserve offers several loop options that are ideal for gravel biking. For instance, the Coyote Peak – Pfeiffer Park loop is a moderate 29 km route that allows you to start and finish at the same point, providing a convenient and immersive experience.


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