The hook
The most-loved trail network on the Peninsula hides a 160-year-old working homestead in its folds — a real farm with pigs, goats, and a cow, a mile's flat walk from a Cupertino parking lot, at the foot of 25 miles of hills.
01Why it's worth it
Rancho San Antonio is where Silicon Valley goes to walk, and the corpus reflects it: pure, repeated local affection with almost no tourist noise, because it functions as everyone's backyard rather than a destination. The gateway is the flat, creek-following path to Deer Hollow Farm — a genuine turn-of-the-century homestead the county keeps as a living farm, complete with barnyard animals and an organic garden, which makes the easy version a favorite of families and dog-walkers. But the preserve is 2,000-plus acres and 25 miles of trail: past the farm the paths climb through chaparral and oak to open meadows and, for the ambitious, all the way up Black Mountain on a nine-mile loop with a backcountry camp. That range — stroller-flat to real climb, from the same trailhead — is exactly why it's the Peninsula's default. It's not scenic-singular; it's beloved, and that counts.
02How to experience it
Cristo Rey Drive off I-280 in Cupertino (free; the lot fills by mid-morning on weekends — go early or bike in). Flat version: the ~3-mile loop to Deer Hollow Farm and back. Big version: PG&E and High Meadow trails up toward Black Mountain. Weekday mornings are the move.