Registration is required for events as noted. Drop-ins are welcome at all other events. Rain may cancel. Some hikes are several hours long. Please bring water and snacks and dress for the weather. No pets, please. For more information or directions, call Teri Rogoway at 408-224-7476.


Friday, October 3 | 4:00 to 5:30 p.m.
Ulistac Natural Area, 4901 Lick Mill Blvd., Santa Clara, CA 95054
What better way to end your week than a stress-reducing walk with friends? Join us for a peaceful, docent-led walk through the butterfly garden and the bird-filled woods of Ulistac. Children and pets on leash are welcome.

Saturday, October 4 | 10:00 to 11:00 a.m.

Alum Rock Park (meet at the Youth Science Institute)
16260 Penitencia Creek Rd., San Jose, CA 95127
Explore the history and mystery of Alum Rock Park as we take a gentle walk through this historic mineral springs area. Please bring $6 for parking. Sorry, no pets.

Wednesday, October 8 | 4:00 to 7:45 p.m.

Sierra Vista Open Space Preserve
Join Docent Sparky on a fast-paced, exhilarating 5-6 mile hike from the top of Sierra Vista Open Space Preserve. Brave the 1,000-foot elevation gain and enjoy spectacular views of the Santa Clara Valley. Sun sets at 6:42 p.m. and the moon rises at 7:10 p.m., so dress in layers, bring snacks and water, and a folding chair to watch the sunset and moonrise from the top of Sierra Road.

Saturday, October 11 | 10:00 a.m. to 2:00 p.m.

Call 408-224-7476 for location
21350 Almaden Rd., San Jose, CA 95120
The Open Space Authority, the Juan Bautista de Anza National Historic Trail and Santa Clara County Parks present this special program that explores the fascinating life of Juan Bautista de Anza, and how he brought hundreds of people safely across the wilderness to settle in the West. Families welcome. This 4-mile hike is over rough, undeveloped terrain, but not steep. Registration required. Call Teri Rogoway at 408-224-7476 to reserve your spot.

Saturday, October 11 | 10:00 a.m. to 2:00 p.m.

Rancho Cañada del Oro Open Space Preserve (meet in the parking lot)
Join our enthusiastic docents for an informative and fascinating look at tracking the creatures that live at Rancho Canada. You will enjoy the Mayfair Trail — a 4.5 mile hike — in search of evidence of the wildlife that live all around us.

Friday, October 17 | 7:30 to 9:30 p.m.

Rancho Cañada del Oro Open Space Preserve (meet in the parking lot)
Grab your binoculars and join us for an evening of stargazing! Docent astronomers from the San Jose Astronomical Association will show you how to use binoculars to view asterisms, nebulae, planets and more. Please bring 10x50mm binoculars or larger, a comfortable chair, red lens flashlight, and warm clothes. Directions from Hwy 101: Take the Bailey Ave. exit west, turn left onto McKean Rd., right onto Casa Loma Rd. Turn your headlights off as you pull into the first, paved parking lot.

Saturday, October 18 | 9:00 to 11:00 p.m.

Rancho Cañada del Oro Open Space Preserve
Join our friendly docent astronomers, the San Jose Astronomical Association and other stargazers for an evening under the stars. No telescope? No problem! Our docents are happy to share theirs. Families and children are welcome. Directions from Hwy 101: Take the Bailey Ave. exit west, turn left onto McKean Rd., right onto Casa Loma Rd. The parking area is at the end of the paved road on your left.



Staff of the Open Space Authority and volunteers provide the general public with a variety of things to do. Hikes, rides and special events offer a chance to enjoy the Authority’s trails and preserves and learn about the natural world in the company of others.
Dragonfly hike

Our schedule includes such things as guided nature hikes, bike and equestrian rides, photography walks and stargazing sessions. OSA also creates special events for children, including a summer day camp and Halloween celebration. All activities are free and open to everyone.

The Open Space Authority also offers a number of education programs for school and community groups. These programs are booked through the Coordinator of Interpretive Programs, who can be reached at 408-224-7476 or by email.