Hikers in Russian Ridge Open Space Preserve / photo by Lanette Otvos

Ramble from Rancho to Black Mountain

Monday, April 6, 2026
8:45 am - 3:00 pm
Rancho San Antonio Preserve
Approximate Total Miles
11

Join Docent Naturalists Nancy Weintraub, Nick Yatsko, Marie Faust Evitt, and Lindsay Joye on a challenging, moderately-paced trek up to Black Mountain in Montebello Preserve from the neighboring Rancho San Antonio Preserve. After a car shuttle to Deer Hollow Farm, you’ll begin the trek with a gentle ascent, then ramble up the High Meadow Trail to the "PG&E bench" for amazing vistas traversing woodlands, grasslands, and chaparral. You’ll then explore the less-traveled Quarry Trail leading to the steep Black Mountain Trail. Bring a lot of water and a lunch for a well-deserved rest stop at the summit of Black Mountain. The group will determine the route back to the farm (out-and-back or loop down Black Mountain to the Chamise Trail, adding two miles to the journey). Reservations are required and will be accepted on or after March 23 at 12:00 p.m. (Noon) and close April 3 at 2:00 p.m.

Where to Meet

Meet near the restroom at the bottom of the hill in the preserve parking lot farthest to the right. From I-280, take Foothill Boulevard south and turn right almost immediately onto Cristo Rey Drive. Continue about 1 mile, veer right around the traffic circle, and turn left into the park. After entering the preserve, turn right and drive approximately 0.3 miles to Lot 6

To ensure your experience on a docent naturalist outing is enjoyable please review these activity guidelines.

For more information about trail characteristics for this event, check out the Midpen Trail Explorer app. To learn more about ADA accommodations for events, or make an inquiry with the ADA coordinator, visit our Accessibility page.

If your activity requires registration, please be sure to cancel your reservation (from your confirmation email) if you are no longer able to attend so others can participate.

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