Looking for a great trail in Sierra Azul Open Space Preserve, California? AllTrails has 15 great hiking trails, trail running trails, mountain biking trails and more, with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers, and nature lovers like you. Ready for some activity? There are 10 moderate trails in Sierra Azul Open Space Preserve ranging from 1.2 to 18.1 miles and from 679 to 3,477 feet above sea level. Start checking them out and you'll be out on the trail in no time!

views

hiking

nature trips

running

wild flowers

bird watching

mountain biking

dogs on leash

wildlife

walking

As described by the Midpeninsula Regional Open Space District: "Overlooking the town of Los Gatos and the south bay, Sierra Azul Open Space Preserve is the District's largest preserve, encompassing over 17,000 acres of mostly rugged and steep terrain. The environment of Sierra Azul is strikingly varied. One can visit serpentine grasslands, hard, rocky, and steep chaparral, dense stands of bay trees, or quiet, shaded oak woodland forests. For the more hardy explorers, there are deep ravines and riparian corridors, some containing seasonal or year-round water flow. Wildlife is abundant in Sierra Azul. The entire Preserve is prime mountain lion habitat and also provides homes for deer, bobcats, coyotes, and many other species of animals. Sierra Azul ("Blue Range") is a true wilderness area, yet surprisingly close to the urban areas of the South Bay, making it a popular destination." Hours: half an hour before sunrise to half an hour after sunset

Very serene with nice views of Los Gatos and The Valley in a few spots. I ran into only a few people. Trails are wide (more of a fire service road for high power lines) but also extremely steep in some sections. Bring lots of water and do this trail in cooler weather.

Great challenging hike. Beautiful views. Worth the challenge and a good work out

hiking
muddy
5 days ago

hiking
12 days ago

2 of us went there for Friday 01/3/20 7am trail running for beginners. It was beautiful experience. Parked car on a shoulder, and spent 1h running and talking

hiking
13 days ago

Great training hike for the vertically challenged (such as myself). Uphill usually kills me but this was very mild inclines, didn’t need to rest at all. Windy at summit with cool views.

Good hill run. Go clockwise as the uphills are more gradual that way. First mile is just a slight incline following the creek and is nicely shaded. At around mile one the gradient picks up and it’s a good workout, still in shade. You top out at mile 2.5 and run along the summit on a fire road. There are some steep downs and nice views. You drop down to the road about 1/3 of a mile from where you parked, so it’s a leisurely trot back to the car. It’s good for dogs too, it watch for mountain bikers if you have your dog off leash. It gets pretty hot on summer days but the first half is under shade.

Relatively easy, great views, although the fog came in on our way up and by the time we were heading back down, we couldn’t see anything!

hiking
15 days ago

Nice shaded trail and great view at the top. Will definitely come back in summer!

hiking
15 days ago

1/1/2020 Windy in some spots, muddy in some small areas. I would come early as parking is limited

Looks like a great trail for mountain biking, but for hiking it’s a complete bore. No good views. Decent exercise though with steep ups and downs.

Great workout!

hiking
1 month ago

Tough workout for me, I would consider it hard not moderate for the elevation gain only. Would never do this hike in the summer. Giving it 5 stars for the awesome views at the top when visibility is good. Could see the skyscrapers of SF through the haze.

This trail follows a set of fire and access trails over the Sierra Azul between the Los Gatos-Almaden Hills and Lexington Reservoir. It has an excellent mix of steep uphill on wide fire trails and vista sections with rolling terrain. The trail is fairly lightly trafficked over the whole length.

hiking
1 month ago

Really enjoyed the history and wildlife facts!

hiking
1 month ago

Great trail with moderate incline! Views are the top were awesome! Some muddy sections and most of the trail is in the shade. Would def hike again!

mountain biking
1 month ago

Not very technical but enough to keep one entertained. I’ll do it again.

Definitely take the trail clockwise! Middle 1/3 of trail is exposed fire road - boring! Late 1/3 of trail dotted with views of Lexington reservoir! Not crowded at all. Went at 1:30 on a Sunday! Good quick cardio and nice close trail to Silly Valley. Enjoy!

hiking
2 months ago

Great trail, loved the shade! Next time we are going to do the 12.1. Didn’t plan for a ride from the top today so had to do the out & back! Great weather! Will be back!

It was really hard for me. It took 5 hrs to complete include lunch time on the top of mountain. First half was nicely sloped and easy to keep walking. But later second half was really tough. The view was amazing and could feel sky so close to me. Nice exercise, I want to try again.

hiking
2 months ago

Well shaded. Trail well marked. Beautiful at the cube. View of 3 main mount.

hiking
rocky
2 months ago

Parking is alongside the road; when I arrived around 10:45 am on a Sunday, there were a few spots open. This trail is dog-friendly but sadly, most of the people I saw with dogs had them off-leash, which is not permitted. It was moderately trafficked closer to trailhead and lightly trafficked further in. Limekiln trail seems popular with mountain bikers. As another recent review mentions, the last 0.4 miles you are walking along the road, which is winding and without a berm in many spots. I wouldn’t recommend it if you have small kids. Finally, I use Runkeeper to track my mileage and it put this hike at around 4.85 miles.

hiking
2 months ago

Gradual climb. Very well maintained trail with tons of shade. Spectacular views.

hiking
2 months ago

Beautiful trail . Longest hike done so far in around Bay Area . Enjoyed it

hiking
2 months ago

lots of shades, recommend for hot days. great views at the summit. actual hiking took us about 3hours,but with the rest at summit, prepare to spend 4hiurs on this trail.

A great trail, but definitely a workout. It’s good for dogs, although the last part of the trail to the peak said no dogs allowed and had rangers around the area. Make sure to bring plenty of water and sunblock. We were followed by a lot of flies.

hiking
2 months ago

good workout and you reach a summut with great views. definitely a good hike.

Wonderful hike. view from the top is stellar as always.

hiking
3 months ago

Thoroughly enjoyed it. Not overly taxing but still enough to get the lungs going. Beautiful scenery all around. Volunteers are commended.

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