For those headed to Rte 5 from the South Bay, you've likely passed Pacheco State Park on Hwy 152…read morebefore descending to the San Luis Reservoir. (But don't blink, or you'll miss the exit). Despite the unassuming entrance, it's a surprisingly large and beautiful park. Like a lot of hikes in the Diablo range, your experience will depend much on the season. Summer here is to be avoided, unless you are a heat-freak (or masochist). Fall and winter are much better, but still brown with a capital B.
Spring, however, is the time to see sprouting trees and hills bathed in green. I went here with hiking buddy M in early March, and conditions were absolutely ideal. Some wildflowers were already out; and we spotted munching elk on an adjacent hillside (They scattered quickly.) The weather was sunny, windy, and in the 60s. Just gorgeous. (Photos added).
Trail junctions were well-marked, but some trails were so faint they sometimes faded into pasture. (For those who want to hike on anything but primary fire roads, a navigation device is recommended.) We had excellent trail maps on our phones, so we were able to explore some more remote trails.
Note: Being next to Henry Coe State Park, I had thought to call this a "mini Coe" but that's not accurate. It feels a little less wild and is windier (a wind farm borders the eastern side).
Believe it or not, my biggest issue with the park was in leaving. To get back to the Bay Area - and starting from a dead stop - we had to cross two lanes of busy, eastbound traffic on Hwy 152 while also merging with two lanes of 70 mph traffic heading the other way. Patience pants were required, size XL.
Hiking Spot Checklist:
-- Parking: Self-register lot (paid) after entering gate, but there's also free parking 0.1 mi away (outside the gate)
-- Bathrooms: Pit toilets at main entrance
-- Potable water provided: No (bring plenty, especially in summer)
-- Maps provided: Yes (but not very good); bring good maps on your phone
-- Highlights: Unspoiled oak woodland and expansive views