Hiking with Kids Open
Sierra Azul Open Space Preserve
4.7(706)4.7 out of 5 stars, 706 reviews San Jose, CA
About Sierra Azul Open Space Preserve
Sierra Azul Open Space Preserve provides an accessible, high-elevation outdoor experience centered around Mount Umunhum. It's a prime destination for families seeking spectacular panoramic views across the San Jose area, Silicon Valley, Santa Cruz, and even the ocean, often with a unique historical element at the abandoned radar station. The preserve offers a range of activities from easy scenic drives to challenging hikes and biking, with newly renovated facilities and shaded trails for comfort.
What parents should know
Summarized from real visitor reviews.
Best for: Families seeking a scenic drive and easily accessible panoramic views with minimal walking.Multi-generational family outings, accommodating individuals with varying mobility levels.Active families who enjoy moderate hiking or mountain biking on shaded trails.Parents looking for an outdoor activity that combines natural beauty with a historical learning opportunity.A relaxing picnic outing with spectacular backdrops.
Why families love it
- Spectacular panoramic views from Mount Umunhum Summit, visible from a large parking lot or short walks.
- Drive-up access to the summit, making it accessible for families with young children, strollers, or less mobile members (e.g., aging parents).
- Historic abandoned radar station (exterior viewing only) with an informative pavilion about its history, reached by a short flight of stairs from the summit parking.
- Trails with ample shade, providing comfort during summer visits.
- Newly opened/renovated roads, parking, trails, and picnic areas, indicating good maintenance and modern amenities.
- Trails suitable for biking, offering an alternative activity for active families.
Insider tips
- Bring a light jacket, as it's often breezy at the peak, even on warm days.
- Check your vehicle's tire condition before visiting due to reports of a rough road.
- Pack hand sanitizer, as hand washing is not available in the summit bathroom.
- Download any necessary maps or information beforehand due to extremely poor cell signal.
- Allocate sufficient time for longer trails (e.g., 3+ miles), ensuring you can return safely before 5 PM (implied closing/darkness).
- Bring your own lunch and snacks to utilize the picnic areas while enjoying the expansive views.
Good to know before you go
- Families who rely on constant cell phone connectivity for navigation, communication, or emergencies.
- Parents planning to bring their dog, as pets are not permitted on the trails.
- Visitors expecting to tour the interior of the radar station.
- Families with very young children planning extensive trail use without prior knowledge of specific trail conditions (some are narrow and up/down).
- The road to the summit can be rough; parents should ensure their vehicle's tires are capable.
- Crowds
- Reviews do not explicitly mention crowd levels, but the presence of large, newly renovated parking and facilities suggests it can accommodate a significant number of visitors. No reports of excessive crowding or difficulty finding space were made.
- Value
- No entrance fees or parking costs were mentioned in the reviews, suggesting Sierra Azul Open Space Preserve is free to access. The value proposition is high, offering extensive natural beauty, well-maintained facilities (new roads, parking, trails, picnic areas), and varied recreational activities without a direct cost.
- Food
- Outside food is encouraged, with picnic areas explicitly mentioned and recommended for enjoying meals with the views.
- Accessibility
- Direct vehicle access to the Mount Umunhum Summit is available, which is highly beneficial for aging parents, individuals with mobility issues, or families with strollers/young children.
- Safety
- Improved facilities and trail upkeep contribute to overall visitor safety and experience.
What parents say
"Did an 8 mi hike to the peak. Easy trails with steady, but not steep elevation. Nice views of the San Jose area."
3 months ago
"Sierra Azul Open Space Preserve Standing on the top of the mountain and looking down below, you feel like you can see all at a glance. Excellent opportunity for exercise PARKING LOT: The parking lot at the top of Sierra Azul Parking Lot At Mount Umunhum Summit Area is quite large and is also one of the best places for viewing. In addition, there is a small parking lot before reaching the top of the mountain. If you want to see the abandoned radar station, you still need to walk a long way. Sceneries 1. The most outstanding thing is this abandoned radar station. You cannot visit the inside of"
a year ago
"Stunning views. It's usually breezy up their bring a light jacket. Road is a rough one so make sure your tires can handle the road. Worth a trip up to see the old communication station. A piece of history!!"
a month ago
Reviews sourced from public Google data.
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