4.6
(225)
3,694
hikers
48
hikes
Dog friendly hiking trails in Sierra Azul Open Space Preserve (Closed Areas) traverse a diverse landscape within the Santa Cruz Mountains. The region features serpentine grasslands, rocky chaparral, dense bay tree stands, and oak woodland forests. Deep ravines and riparian corridors add to the scenic variety, with trails offering varied elevation gains. The terrain includes significant peaks, providing panoramic views of the surrounding area.
Last updated: July 7, 2026
4.8
(5)
35
hikers
7.72km
02:17
240m
180m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
5.0
(1)
10
hikers
14.8km
04:21
430m
430m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.

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1
hikers
55.0km
16:32
1,670m
1,930m
Hard hike. Very good fitness required. Easily-accessible paths. Suitable for all skill levels.
10.4km
03:06
470m
90m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
2
hikers
13.6km
04:07
450m
450m
Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels.
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You'll want to have your maps downloaded and your route planned once you reach this point. Two trails diverge here and short distance down the Castillero Trail you'll have the option to take up the English Camp Trail.
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From this point just off the New Almaden Trail you'll have an excellent view across San Jose and the surrounding hills.
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Randol Trail runs parallel to Mine Hill Trail but is situated at a lower elevation on the San Francisco Bay Area side. Originally built as a mining road to access the historic Day Tunnel, the trail is a lovely wide, well-maintained path winding through grassy fields, brush, and beautiful wooded landscapes with nice San Francisco South Bay Area views.
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This junction offers many options for continuing to explore the park. From here, you can stay to the left on Mine Hill Trail to extend your hike and connect with other trails to the west. Explore the small April Trail loop northwest or east onto the Great Eastern Trail to connect with Randol and several trails on the east side of the grounds.
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At this point along the track you'll gain lovely views of the reservoir. Guadalupe Reservoir, lies approximately 5 miles south of San Jose. Situated at an elevation of 614 feet, it covers a surface area of 74 acres and boasts a capacity of 4,212,000 mΒ³.
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The view and the experience can change completely during this hike where you find beautiful views of Silicon Valley. The path can thus be very green but in times of drought turned brown.
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Quicksilver is a term used to refer to mercury. These lands, now transformed into an outdoor activity park, were once places where mercury mines were found.
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Sierra Azul Open Space Preserve offers over 50 dog-friendly hiking trails. You'll find a wide variety, from easy strolls to more challenging ascents, ensuring there's something for every dog and owner.
The preserve features diverse terrain, including serpentine grasslands, rocky chaparral, and shaded oak woodland forests. Trails can range from well-maintained paths to more rugged sections, often with significant elevation changes. Many trails are multi-use, so you might encounter mountain bikers or horseback riders.
Yes, there are several easy dog-friendly options. While specific easy routes aren't highlighted here to avoid redundancy, you can find many shorter, less strenuous paths within the preserve that are perfect for a leisurely walk with your dog. Look for trails with minimal elevation gain.
Absolutely. For a more challenging experience, consider routes like the Quicksilver 50K, which is a difficult 55 km hike with over 1600 meters of elevation gain. Other moderate to difficult trails offer substantial climbs and longer distances for experienced hikers and their canine companions.
While hiking with your dog, you can enjoy scenic views of the Santa Clara Valley from various points. The preserve is known for its significant peaks. Although Mount Umunhum is a major attraction, specific dog access might vary on its summit trail. You can also find highlights like Guadalupe Reservoir and the Kennedy Trail, which offer picturesque surroundings.
Dogs are generally welcome in Sierra Azul Open Space Preserve, but they must be kept on a leash at all times. This policy helps protect wildlife and ensures a safe and enjoyable experience for all visitors. Always remember to clean up after your pet.
Yes, the preserve offers several excellent dog-friendly loop trails. For a moderate outing, you could explore the Randol and New Almaden Trail Loop, which covers about 7.7 km. Another option is the New Almaden, Mine Hill, and Guadalupe Loop, a longer 14.8 km moderate hike.
The preserve can be enjoyed year-round. Spring brings wildflowers and milder temperatures, while fall offers pleasant hiking conditions. Summers can be hot, so it's best to hike early in the morning or late afternoon during this season. Winters are generally mild, but trails can be muddy after rain. Always check weather conditions before heading out.
Many of the easier and moderate trails are suitable for families with dogs. Look for routes with shorter distances and less elevation gain. The diverse trail system offers options for various fitness levels, making it possible to find a path that works for both children and dogs.
Parking is available at various trailheads throughout the preserve. Specific parking areas are often associated with popular access points like the Bald Mountain parking area for Mount Umunhum trails or other designated lots for areas like Kennedy-Limekiln. Always check the specific trailhead information for parking availability before your visit.
The area is highly rated by the komoot community, with an average score of 4.58 stars. Reviewers often praise the diverse landscapes, from serpentine grasslands to dense oak woodlands, and the panoramic views from higher elevations. The varied trail system catering to different fitness levels is also frequently highlighted.


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