4.7
(16)
2,228
runners
138
runs
Jogging in Sierra Azul Open Space Preserve offers a rugged wilderness experience across more than 19,000 acres in the Santa Cruz Mountains. The preserve features an extensive network of trails traversing diverse landscapes, including serpentine grasslands, chaparral, dense bay tree stands, and shaded oak woodlands. Significant elevation changes provide varied terrain, from wooded creek canyons to open meadows, with prominent peaks offering expansive views. This region is ideal for runners seeking a dynamic outdoor environment with a mix of moderateβ¦
Last updated: May 10, 2026
7
runners
19.1km
02:25
770m
770m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
3
runners
18.8km
02:14
660m
660m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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1
runners
8.12km
01:04
220m
220m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
7.66km
00:56
300m
300m
Hard run. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
6.81km
00:46
180m
180m
Moderate run. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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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!β¦
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This is the highest point in the Sierra Azul Open Space Preserve. From here, you can enjoy views of the nearby mountains, with the possibility of spotting Mount Umunhum and Mount Thayer. The ascent involves a consistent elevation gain, providing a steady and rewarding experience.
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Hidalgo Cemetery Trail starts off as a fire road, but slowly transitions into an actual trail as you continue. The trail can get pretty muddy when it rains, so wear appropriate shoes, considering a good bit of the trail is downhill on the way in.
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This spot presents awe-inspiring sweeping views of the surrounding region, encompassing the San Jose area. It serves as an excellent location for birdwatchers, as it boasts a diverse array of bird species, including the Northern Flicker and California Scrub-Jay.
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Mount Umunhum is one of the highest peaks in the mountain range at 3,486 feet. From this point, you can enjoy a panoramic view of the ocean and Sierra Nevada.
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Guadalupe Creek Overlook is a scenic viewpoint in the Sierra Azul Open Space Preserve. No matter if you're on your way to Mount Umunhum or if it's your final destination, make sure to include a stop and enjoy the view over the valley.
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This is the highest point in the Sierra Azul Open Space Preserve. From here, you can enjoy views of the nearby mountains, with the possibility of spotting Mount Umunhum and Mount Thayer. The ascent involves a consistent elevation gain, providing a steady and rewarding hiking experience.
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Opened in 2018, on the top of Sierra Azul Open Space preserve the Vista points and the former radar tower on the summit of Mt Umunhum provide stunning 360Β° views
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Sierra Azul Open Space Preserve offers a vast network of trails, with over 130 running routes available on komoot. These routes cater to various fitness levels, from moderate paths to very steep sections, ensuring a dynamic outdoor experience.
Yes, the preserve features a variety of trails suitable for different abilities. You'll find approximately 15 easy routes, perfect for those new to trail running or looking for a less strenuous jog. While many trails have significant elevation changes, there are options that provide a more gradual experience through the diverse landscapes.
Jogging in Sierra Azul offers breathtaking panoramic views. From prominent peaks like Mount Umunhum, Mount El Sombroso, and Bald Mountain, you can see across the Santa Clara Valley, the wider Bay Area, and even the Inner and Outer Coast Ranges. The trails also wind through diverse landscapes including serpentine grasslands, dense oak woodlands, and shaded creek canyons, providing varied natural beauty.
Yes, several points of interest enhance the running experience. The summit of Mount Umunhum features a unique historical Cold War-era radar tower with interpretive displays. Other notable highlights include the Mount Umunhum Road (climb), Kennedy Road Sierra Azul Trailhead, and the Priest Rock Trail, all offering unique perspectives of the preserve's rugged beauty.
The running routes in Sierra Azul Open Space Preserve are highly rated by the komoot community, with an average score of 4.4 stars. Runners often praise the challenging climbs, rewarding panoramic views, and the rugged wilderness experience. Many appreciate the variety of terrain, from shaded woodlands to open grasslands, and the opportunity for both quick hill workouts and longer adventures.
Yes, Sierra Azul Open Space Preserve offers several loop options for runners. For example, the Wood Road and Hidalgo Cemetery Trail Loop is a moderate 6.8 km route that provides a good circular experience through varied terrain.
Yes, dogs are generally permitted on trails in Sierra Azul Open Space Preserve, but they must be kept on a leash at all times. It's always a good idea to check the Midpeninsula Regional Open Space District's official website for any specific trail restrictions or updates regarding pets before your visit.
The preserve offers good running conditions year-round, but each season has its unique characteristics. Spring brings lush greenery and wildflowers, while fall offers cooler temperatures ideal for longer runs. Summers can be warm, so early morning or late afternoon runs are recommended. Winters are generally mild, though some trails might be muddy after heavy rains.
Absolutely. Sierra Azul is known for its significant elevation changes and rugged terrain, making it ideal for experienced runners seeking a challenge. Routes like Kennedy Trail to Mount El Sombroso, an 19.1 km difficult path with substantial ascent, provide a rigorous workout and rewarding views.
Sierra Azul Open Space Preserve is home to abundant wildlife. Runners might spot deer, bobcats, and coyotes. Mountain lions also inhabit the preserve, so it's important to be aware of your surroundings and follow safety guidelines. Enjoy the chance to observe nature, but always maintain a respectful distance.
Public transport options directly to the trailheads of Sierra Azul Open Space Preserve are limited. Most visitors access the preserve by car. It's advisable to check local transit authority websites for any bus routes that might serve the general area, but direct access to trailheads often requires personal transportation.
Parking is available at various trailheads throughout the preserve. Popular access points include the Bald Mountain parking area, which serves the Mount Umunhum Trail, and the Kennedy Road Trailhead. Always check signage for specific parking regulations and hours, as some areas may have limited capacity.
Yes, Sierra Azul Open Space Preserve is excellent for hill workouts due to its varied topography and steep sections. The Bald Mountain Trail, for instance, offers a good climb through grassy hillsides, providing a solid challenge for building endurance and strength.


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