4.6
(288)
2,311
riders
71
rides
Mountain biking in Sierra Azul Open Space Preserve offers a diverse network of trails within a protected natural area. The preserve features significant elevation changes, with routes ascending peaks like Mount Umunhum and Collords Peak. The terrain includes varied landscapes, from forested sections to open hillsides, providing a range of riding experiences. These trails are characterized by their natural surfaces and often provide expansive views of the surrounding region.
Last updated: June 24, 2026
4.7
(3)
25
riders
22.3km
02:22
680m
680m
This 13.8-mile moderate mountain biking loop in Sierra Azul Open Space Preserve offers challenging climbs and panoramic summit views.
5.0
(1)
9
riders
10.8km
01:24
480m
480m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Sign up for free
4
riders
46.3km
05:37
1,780m
1,780m
Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(1)
33
riders
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
5.0
(1)
22
riders
28.3km
02:44
860m
860m
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Start today with a free account
Your next adventure awaits.
Login or Signup
This is not a very exciting trail to hike. Itβs 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
0
0
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¦
0
0
The Mount Umunhum Trailhead offers some amenities, including bathrooms at both the start and summit. With parking available for about 20 cars, this trail provides great views and is a great spot for sunsets. Aim to hike early in the morning or in the evening as it can get very hot in the summer.
0
0
Forbes Mill Museum, housed in a two-story building of the original 1854 flour mill, offers a glimpse into Los Gatos' history. Built by James Alexander Forbes as California's first commercial flour mill, over the years, it served various roles, including a power plant and a PG&E substation. Saved from demolition in 1982, the building now features historical exhibits as part of New Museum Los Gatos.
0
0
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.
1
0
From the top of the dam you get splendid views out across Lexington Reservoir. To the north you overlook the winding end of the Los Gatos Creek Trail, which connects to the Jones Trail across from the restroom just up the road. The dam itself was constructed in 1952 and stands at nearly 200 feet tall.
0
0
The Kennedy Road Sierra Azul Trailhead has a small parking area that fits about three cars, depending on size, and offers a shaded starting point. A portable toilet is available at the trailhead, and additional parking can be found at the top of Top of the Hill Road.
1
0
Sierra Azul Open Space Preserve offers a wide selection of mountain bike trails, with over 60 routes available. These range in difficulty from easy to difficult, ensuring options for various skill levels.
Yes, there are several easier options. The preserve features 10 trails rated as easy, providing a good starting point for less experienced riders or those looking for a more relaxed ride. For example, the Los Gatos Creek Trail β Lexington Reservoir loop from Oak Meadow is a moderate route that offers a less strenuous experience compared to the more challenging climbs.
For experienced mountain bikers seeking a challenge, Sierra Azul Open Space Preserve has 21 difficult routes. Notable challenging trails include the Mount Umunhum β Mount Umunhum loop from Almaden Quicksilver County Park, which is 20.0 miles long with significant elevation changes, and the even longer Mount Umunhum summit β Mount Umunhum loop from Heintz Open Space, covering 46.5 km with substantial climbing.
Yes, many of the mountain bike routes in Sierra Azul Open Space Preserve are designed as loops. For instance, the popular Mount Umunhum Loop is a 13.8-mile moderate route, and the Collords Peak β Kennedy Trail loop from Heintz Open Space offers a 7.9-mile ride through hilly terrain.
The trails in Sierra Azul Open Space Preserve are known for offering expansive views of the surrounding region. Routes that ascend peaks like Mount Umunhum and Collords Peak provide particularly rewarding panoramas. The varied terrain, from forested sections to open hillsides, also contributes to diverse scenic experiences.
The mountain bike trails in Sierra Azul Open Space Preserve are highly regarded by the komoot community, with an average rating of 4.6 stars from over 245 reviews. Riders frequently praise the challenging climbs, scenic viewpoints, and the varied natural surfaces that make for an engaging riding experience.
Yes, the preserve features several notable points of interest. You can encounter the challenging Mount Umunhum Road (climb), explore the Kennedy Road Sierra Azul Trailhead, or ride along the Priest Rock Trail. The preserve itself, often referred to as Sierra Azul Open Space, offers a rich natural environment.
While specific conditions can vary, the preserve's trails are generally accessible for mountain biking during most of the year. However, given the significant elevation changes and natural surfaces, it's advisable to check local weather conditions, especially during the rainy season when trails might be muddy, or during hot summer months when temperatures can be high.
The mountain bike trails in Sierra Azul Open Space Preserve are characterized by their natural surfaces. This means you can expect a mix of dirt, gravel, and potentially rocky sections. Conditions can vary with weather, so it's always a good idea to check recent trail reports before heading out, especially after rain.
Yes, there are designated parking areas that provide access to the trails. For example, the Kennedy Road Sierra Azul Trailhead is a known access point, and other trailheads typically offer parking facilities. It's recommended to check specific trailhead information for details on parking availability and regulations.
Sierra Azul Open Space Preserve is a protected natural area, so facilities like cafes are not typically found directly within the preserve itself. However, towns and communities bordering the preserve, such as Los Gatos or Almaden Valley, offer various amenities including cafes, restaurants, and shops for pre- or post-ride refreshments.


Browse the best MTB trails in other regions.