Sierra Azul Open Space Preserve Loop

MODERATE 13 reviews

Sierra Azul Open Space Preserve Loop is a 18.1 mile moderately trafficked loop trail located near San Jose, California that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round. Dogs are also able to use this trail but must be kept on leash.

18.1 miles
3,861 feet

dogs on leash

kid friendly



horseback riding

mountain biking

nature trips

trail running




wild flowers

This is a great park with expansive trails that connect to the Almaden Quicksilver Park and the Lexington Reservoir Trails, including St. Joseph's Hill Open Space Preserve. The trails have great vistas and many parts are shaded. The Sierra Azul Open Space Preserve is the district's largest preserve, encompassing 18,831 acres. This park property is a bit of a jigsaw puzzle as the plots of land that were purchased are not contiguous, but the trails are long and it is possible to travel all the way to Lexington Reservoir. The park includes some of the great vista points in the south bay, including Mt. Umunhum (closed to the public), Bald Mountain (2,387 ft), Mount El Sombroso (2,999 ft). The trails are well groomed and marked and many parts are shaded.

trail running
Friday, June 30, 2017

This is a great trail to get some mileage in with lots of hills. I started late in the morning so it became extra toasty at the top so best to remember to bring plenty of water if you will be in the hotter hours of the day. There were great views and wide trails that were well marked. I would go again.

Saturday, May 13, 2017

This place was very nice. I went in the fall and it was quite lush and green. Some nice scenic views and wildlife viewing. I spotted quite a few salamanders along the trail.

Wednesday, April 16, 2014

Very peaceful. Lots of trees and great views across San Jose. No benches. A word of warning, in the small car park at the hicks road/mount Umunhum road, there have been lots of car break-ins. I was there in November and all but mine of the 6 cars had been broken in to.

Friday, September 20, 2013

This is a nice trail with lots of shaded areas and interesting geological variety!

5 months ago

10 months ago

Thursday, April 27, 2017

Tuesday, December 27, 2016

Thursday, November 19, 2015

Sunday, February 15, 2015

Sunday, September 15, 2013

Saturday, December 03, 2011