Explore the most popular Bird Watching trails in Diabio Foothils Regional Park with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

Dont recommend parking on Regency Drive. Regency Dr is all restricted parking where you need permits. Clayton Police are actively ticketing non-residential parking violations on weekends and holidays. save your $ and support the State Park system by parking over at Mitchell Canyon for $6.

Took me about a hour and half to finish the trail. Really good early morning trail before school!

1 month ago

The views once you reach the top are phenomenal. The moderate rating is deceptive. Most of the trail is easy, but the scramble up along Castle Rock is very steep (look at the elevation outline of this hike), at times being steep enough that you use your hands as well as your feet. Not everyone will be comfortable with this part. It was a clear day when we hiked up and the views took my breath away.

no shade
2 months ago

The out and back trail listed is quite short and a little boring on its own. We added about 2 miles and a little elevation by taking a right on the Little Yosemite Trail she then just keep taking a right until you're back on Castle Rock Road. Beautiful scenery on this extra part, from forestry areas to wide open rolling hills. Bring sunscreen and probably don't do the extra loop on a hot afternoon in July, because there's zero shade in some parts.

Quick and easy loop to the end of castle rock, right before you start the climb the base of Mt. Diablo.

Amazing hike with great view. It’s an easy hike too.

Hiking with Angelo with 4x2 lake crossing/jumping

only rated as hard because of the initial climb up Castle Rock, otherwise easy, this area off limits from Feb to July due to Peregrin Falcon nesting. Great little loop. almost five miles but because of the climb took two hours. We hit the trail at 6am and only passed one hiker on the way out. Nice bit of isolation. Lots of birds, Nuttals Woodpeckers, hawks, seen a skunk as well.

Great trail! Beautiful scenery. Prepare to have dusty ankles and shoes at the end.

Little unknown park in Walnut Creek. You really need to go very early and you will have the park to yourself. We park down the street and enter before the ranger unlocks the gate. Nice little 3 mile morning hike to start your day. Lots of birds, deer we have even seen a bobcat.

Easy peasy hike for all fitness levels. Only 200’ elevation gain which is nothing. HOT in summer but this is a perfect after work hike to do with my dog. Dogs are allowed off leash here, there’s grazing cattle and the usual wildlife that you find in the EB hills. After a rain, parts of the trail are really muddy so make sure you wear real hiking boots and not sneakers.

4 days ago

16 days ago

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