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    Castle Rock State Park

    4.6 (429 reviews)
    Open 6:00 am - 6:00 pm

    Castle Rock State Park Photos

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    Waterfall
    Nate S.

    Pretty good state park if you're looking for hiking in the Bay Area. Trails are maintained and nice with lots of scenery.

    Daw M.

    Loved the small little walk we did half covered and uncovered so wear your sunscreen Lots of poison oak everywhere beware! Great views I'll do the loop next time Thanks!

    Erik S.

    This was a really neat surprise, an unplanned stop at the top of the mountain. It was a very foggy day, and it made this mossy redwood forest have a ton of mystique while hiking through it. Trails were clearly marked and the difficulty was easy to understand. Park Rangers at the pay station were very helpful, suggesting a great route for a moderate 2 hour round-trip hike. Castle Rock fall was a neat view, the waterfall wasn't anything huge, but watching it cascade down a steep drop was interesting. Apparently on a less foggy day, the view from here is also outstanding. When I went, the fog was so dense, you could barely see beyond 50 feet or so. That did make it a pretty sparse day at the park, so I had a quiet hike without seeing many other people. The actual Castle Rock is pretty darn cool looking, and aptly named! Most any visitor can access this easily from the parking lot, no matter their fitness level. I would definitely come back when in SF next time on a clearer day to catch some of the views I missed!

    Sonia S.

    How spoiled we are to be surrounded by so many beautiful parks. I visited Castle Rock on Saturday around 10am. There was plenty of parking in the lot, which was $10. There's a few spots on the road, which are free but hard to get. There are maps available and we decided on the 2.5 mile one, I believe it was called the Saratoga loop? The views were breathtaking. Plenty of trees and yes, lots of giant rocks. Toward the middle of the hike there were huge boulders that we climbed and were able to really take in the view. Along the trail there were two separate groups of rock climbers, this was cool to see. When we were done with this hike we found another one on the other side of the road called the Skyline trail. This was also beautiful and had fewer people. It was only a mile long but more challenging than the one we had just finished, due to the incline. Cell phone coverage isn't great so make sure you download a map of the area beforehand.

    Daniel F.

    I've heard so much about this hiking spot and it didn't disappoint at all. Reading through the reviews parking was what I was worried about as they stated to come real early. Got here at 10am on Saturday and was surprised there was a lot of parking. If you park inside the State Park it's $10, but there's free parking that's about a 5 minute walk on the road. One of most organized parks I've been too lol. Signs everywhere and the maps are detailed on distance for each trail. The views are and trails are amazing. Well worth the visit. Would highly recommend this trail.

    Kristine S.

    Enjoyed the hike here. Can't wait to explore more and try different trails. We unfortunately were not able to see the falcon which we were searching for to take some bird photos. Hopefully next time.

    Foggier day
    Tiffany M.

    I have come here a handful of times over the past handful of years. It is a really nice place to hike, and looking at the giant boulders in the park too, I can see why it is a popular bouldering spot. During my most recent visit, it was very foggy in the mountains, but that gave the park a very atmospheric feel. There used to be this gravel parking lot that was free, but lately it's been closed and so you have to go to the paved parking lot nearby and pay $10 for parking. I think it is worth it though if you plan to hike for a bit - plus there are restrooms and picnic tables there. This place is quite the g em in the South Bay area and I would definitely recommend hiking here !

    Patricia S.

    Castle Rock State Park is a pretty nice place to come hike. There are really nice views on the way there. There are some trails to go hiking on. The views at Castle Rock are very beautiful. Will be coming back again.

    Me on Goat Rock
    Connie W.

    Arrived to the trailhead by 8:30 on Saturday after Thanksgiving with friends.  Weather was beautiful, cold but no wind.  As popular as this trail is, the $10 parking lot was sparsely filled, later it filled up as we were leaving at 11ish.  The huge parking lot and restrooms were quite classy. In 3 hours time, we were able to visit everything we had planned - climbed on Goat Rock, basked at the vast views on a rock along Saratoga Gap Trail, saw the waterfall which was just trickling, and visited the famous and crowded Castle Rock.  This is a great hiking destination because it is close to town, great views, and fun opportunities to scamper on rocks.

    Kim T.

    Having back here for awhile, the park is still clean and this time WiFi is much not working. Parking is $10 for one car and entrance is easy especially there is trail arrow showing which direction and distances. I came here on Saturday morning and it was empty, but parking seem full.

    I recently visited Castle Rock Regional Recreation Area, often called Castle Rock Park by locals, and I'm giving its picnic area a solid 4-star rating. Nestled in a scenic canyon along Pine Creek within the Diablo Foothills Regional Park, this spot offers a delightful escape with a mix of natural beauty and practical amenities that make it a great choice for a picnic outing. The picnic area itself is well-equipped and thoughtfully designed. There are eight reservable sites, with capacities ranging from 50 to 100 people, which makes it ideal for both small family gatherings and larger group events. I appreciated the ADA accessibility--wheelchair-friendly pathways, accessible picnic tables, restrooms, and changing rooms ensure everyone can enjoy the space comfortably. The sites are partially shaded, offering a nice balance of sun and cover, and there are even drinking fountains and a swimming pool nearby for those hot summer days. The quarter-mile walk from the parking lot to the picnic sites is manageable, though I'd recommend bringing a wagon for heavier items as there's no shuttle service. The setup felt practical yet serene, with the surrounding canyon and views toward Mt. Diablo adding a peaceful backdrop to our meal. What really stood out was the access to nature right beyond the picnic area. After eating, we ventured onto the trails that wind up the canyon, and within a mile, it felt like we were deep in the countryside despite being on the edge of Walnut Creek. The trails connect to over 18,000 acres of public lands, including Mt. Diablo State Park, which is perfect for a post-picnic hike. The park also has amenities like basketball courts, horseshoe pits, and a volleyball court, which added some fun for the kids in our group. One thing to note--parking can be tight, especially in summer, so arriving early is a good idea. Also, while dogs are allowed in the park section, they're not permitted on the rangeland trails, which was a slight bummer for our pup. Overall, Castle Rock Park's picnic area offers a fantastic blend of convenience and natural charm. It's not perfect--public transit access is limited, and the walk from parking might be a hassle for some--but the setting and facilities make it a spot I'd happily return to for a relaxing day out.

    Jimmy V.

    This park is one of the best outdoor bouldering spots around San Jose and hosts some incredible hikes. I always hike after it rains because the skies shine brighter. The park has sandstone formations as you can see in my videos. They make some cool "caves" to explore and get some shade in. I recommend coming here! There is paid parking and free parking if you're willing to walk a bit further to get to trailheads.

    castle rock trail is very shaded
    Hen A.

    print a map or have satellite gps...cellphone reception is extremely spotty...$10 per vehicle to park in the lot...credit card accepted...print and place inside the car dashboard...take a picture of the map and start your hike...the trails are shaded by trees...castle rock loop is an easy trail for even toddlers...from the main entrance, it's about 3/4th the way to reach the rocks...enormous rocks with tunnels carved into them...natural playground for children to sit inside the rocks...explore through numerous rooms and cave-like passageways...some too cramp for adults...keep an eye on the children since a slip or fall can be painful....be very careful where you step since this area is infested with fire ants that have painful bites...active bee hives also spotted...other than that, it is a wonder place to hike, explore and play...great hike for children!

    Goat Rock trail

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    Good place for hiking for South Bay Area. Plenty of parking, restrooms, and places to have a dinner or lunch

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    Page 1 of 11

    Ask the Community - Castle Rock State Park

    Can you go fishing there?

    Fishing is not allowed in this park.

    Are any of these trails appropriate for Jeeps?

    No, the trails are for hiking only.

    Is it open right now or do they still have signs saying it's closed?

    It's open now

    Is it stroller friendly?

    No it's not.

    Hi! Does anyone know if this is currently open during this time?

    The park is open daily from 8am until sunset.

    How many miles is this trail?

    Saratoga Gap to Falls Overlook to Interconnector Trail to Goat Rock to Saratoga Gap is about 8-9 miles

    Are the bike trails beginner friendly?

    Yes and No. They only allow bikes on certain parts of the trails. The yes part is there are flat areas a beginner could ride with no problem. But then comes the hills and curves and turns and narrow ridges that can be a real learning experience. You… Read more

    Is it ok for kids? Were not expert hikers or rock climbers, but the kids- 5, 8,& 10 love to climb and explore.

    Yes there are short easier trails that depart from the main visitor center. You can take the trail to the waterfall viewing platform that I believe is under a mile round trip. If your kids are more adventurous you can take them to the first section… Read more

    Do the beginners trails have very steep inclines?

    Yes, it has a variety of trails but I would say inclines are all over the trails. Once you get to the skyline you would think it is all worth it. Regular tennis shoes it's fine for hiking the trails.

    Do the campground bathrooms have showers?

    No, it's primitive camping in the backcountry. No car camping.

    The drive to the hiking trail seems scary to drive on. Is there a way to get there without driving on the single-lane, scary one lane road or walk to the trail?

    Negative. Either Black Rd or Hwy 9 your only two options

    Is it dog friendly?

    Only service animals according to the pamphlet I picked up

    Is there free parking? If so, where is it located? Thanks!

    If you want to park in the main lot there is a cost. However, there is some limited space along the street that is free if it's available.

    We're beginner hikers so I was wondering what's the easiest trail to get to the very top view? Or are all the trails intermediate/advanced? Thanks!

    There is no view at the very top, but there are views to be had in CR. For a very short hike (under 2 miles) take the Saratoga Gap Trail from main entrance, downhill until you reach the waterfall viewing platform (some views). then return the way… Read more

    Don’t See Your Question? Ask Away!

    Review Highlights - Castle Rock State Park

    After spending some time admiring the falls, we decided to turn back around and head towards Goat Rock.

    Mentioned in 59 reviews

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    Bear Creek Redwoods Preserve

    Bear Creek Redwoods Preserve

    4.3(32 reviews)
    7.4 mi

    The 6.2-mile 1000 feet of elevation is now my new favorite local trail, especially having recently…read morewatched Hamnet, the scenery felt strangely cinematic, as if certain moments--especially the cave entrance--had been lifted directly from the film. In Hamnet, the cave stands as a symbol of that mysterious realm of death, the void from which we come and to which we ultimately return. Yet on this beautiful sunny afternoon, as life breathes through every tree, every leaf, and every small flower, and as I feel the gentle care and encouragement of those beside me, I realized, not in a limbo zone way, that the world, exactly as it is, is beautiful enough. Heaven must be even better. https://youtube.com/shorts/xiQGHA3WKrY?si=womdxeGsiEBLsH0W

    Underbear Newish…read more±1,400-acre Open Space Preserve that's located only three-mikes south of Los Gatos, and is one of the few places in the area left to see Old-growth Redwoods. The Good: *Free! *One of the newer OSPs, as it officially opened in ±2019 *Fairly large paved parking lot that holds ±30 vehicles, including three ADA parking spots. There's a separate parking lot at the stables, but you need a permit. *Over ten miles of hiking trails *ADA Compliant trail around the pond in the parking lot. *Horses OK (check trail signage) *Picnic tables in the parking lot *As mentioned above, one of the few places in the South Bay that you can view old-growth Redwoods that doesn't require you to drive down to Felton (Henry Cowell) or Big Basin. *If you're looking for a challenge, the Upper Peter Siemens Trail-Madrone Knoll Trail has an elevation gain of ±1,500' over ±3.5 miles The Meh: *No dogs/pets The Ugly: *Restrooms in the parking lot, but I believe they were vault toilets--don't look down! 0_o Conclusion: Great place to get your hike on if you're in the South Bay and don't feel like a terribly long drive.

    Photos
    Bear Creek Redwoods Preserve - Bridge

    Bridge

    Bear Creek Redwoods Preserve
    Bear Creek Redwoods Preserve

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    Villa Montalvo - Villa Montalvo County Park

    Villa Montalvo

    4.6(46 reviews)
    5.3 mi

    One of my favorite spots in the South Bay for a quick hike! The grounds at Montalvo are absolutely…read morebeautiful, as are the forested trails that wind up the hill and down the creek near the villa. Though there are a few different trials to choose from, they all end up crossing at one point or another. Even if you do all of them, they aren't too long and the hike tends to be fairly short. The area is pretty hilly, so most trails have a good elevation gain. Aside from the hiking, you can stroll the garden and picnic in the grass in front of the villa. They have some art installations around the grass and in the garden that are fun to look at. They also have concerts here, there is a stage outside, but I've only ever seen one inside the concert hall. They're usually smaller names and smaller shows.

    This is a beautiful estate and gardens in the Saratoga hills residential area. It's a bit confusing…read moreas you drive up to the front entry as there are a couple drives and you need to pay attention or you will go "down the wrong road" (the entry is the middle road of the three) ...The entry is ONE WAY and narrow as you wind your way up to the parking lots around the estate. BE SURE TO CHECK OUT EACH LOT as you come up to them (Lots 1-4) as noted this is a one-way road. If you reach Lot 4 and can't find a spot you have to drive all the way back down to the main road and start over. Just saying to save the frustration. Parking is free by the way. The main estate house holds conferences and events and such was this on the day we were there, so we couldn't get inside. The main lawn is excellent for having a picnic and just relaxing. The surrounding grounds have a trail that winds around with lots of outdoor art to experience. Be sure to go through the large "deer gate" at the bottom of the grounds. There is more art to be viewed in the Italian Garden. With the trails, ponds, botanicals and art it's a lot to see and enjoy.

    Photos
    Villa Montalvo - Indian wedding photographer at Villa Montalvo, Saratoga - groomsmen

    Indian wedding photographer at Villa Montalvo, Saratoga - groomsmen

    Villa Montalvo - Indian wedding photographer at Villa Montalvo, Saratoga - groomsmen

    Indian wedding photographer at Villa Montalvo, Saratoga - groomsmen

    Villa Montalvo - Indian wedding photography at Villa Montalvo - groomsmen

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    Sierra Azul Open Space Preserve - #AzulPreserve #AzulHiking #HikingBayArea #HikingCalifornia

    Sierra Azul Open Space Preserve

    3.9(38 reviews)
    10.4 mi

    Came here for a hike on the Sunday of Memorial Day weekend! Arrived at the Bald Mountain parking…read morelot around 8:30am and there were lots of spots still available. I went on the Mount Umunhum out and back trail. Still pretty green with some wildflowers! There were a decent amount of hikers, and lots of bicyclists. Seems like a very popular spot for mountain bikers! Had to watch out for cyclists most of the hike. Along the trail, there were some informational posts about the mountain's history and at the summit, there was a neat informational site, Native American pow wow example, and good balcony for pictures. Learned that Umunhum has that name because the Natives thought it sounded like a hummingbird! Partially shaded but I still recommend going in the morning. There were lots of switchbacks so the hike felt long - took me around 3 hours and 15 minutes including breaks to complete. When I came back around 11:45am, the parking lot was full and some people were parked on the side of the road. Overall, I would classify the Mount Umunhum trail as moderately difficult. Because of the switchbacks, the incline is very gradual but the hike feels longer. Good views and trails were well-maintained with markers. The constant cyclists slightly detracted from the hiking experience, but I would still recommend!

    Did the Mt Umunhum trail. Mostly shaded. Free parking. Great views. Some historical stuff (WW2…read moreradar builing and Native American religious site) at the top which is a nice reward making it to the top. Can drive all the way to the top if mobility is an issue.

    Photos
    Sierra Azul Open Space Preserve - #AzulPreserve #AzulHiking #HikingBayArea #HikingCalifornia

    #AzulPreserve #AzulHiking #HikingBayArea #HikingCalifornia

    Sierra Azul Open Space Preserve - #AzulPreserve #AzulHiking #HikingBayArea #HikingCalifornia

    #AzulPreserve #AzulHiking #HikingBayArea #HikingCalifornia

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    Lexington Reservoir County Park - Lexington Reservoir County Park

    Lexington Reservoir County Park

    4.3(64 reviews)
    8.0 mi

    I have come here countless times over the years. It's one of my favorite spots. It's peaceful, not…read moreoverly crowded, and has a really calming, almost zen feel to it. The views of the water and surrounding hills make it a great place to reset for a bit. Perfect for a quiet walk, light hike, or just getting away from the noise for a while.

    Who Gives a Dam?…read more Man-made reservoir in the Santa Cruz Mountains that spans a solid 338-acres and is the third-largest in Santa Clara County. It is situated inside a ±950-acre County Park that has a variety of activities for all manner of outdoor lovers. The Good: *The southerly "beginning" to the Los Gatos Creek Trail which runs for ±10miles to the north. *Rowing, paddling, and fishing are all allowed (after proper inspections and licensing ofc) *Picnic tables near the reservoir *Limekiln trail was mostly shaded, which is good because this are can get very warm in the summer. *Park trails connect to Sierra Azul OSP and St Joseph's Hill OSP *Mountain bikes (NOT electric!) are OK *Leashed dogs are permitted. *Fairly decent cell phone signal (at least where we were) The Meh: *Parking is $6 if you park inside the lot, but free if you use the "street" parking (pay attention to signs!) or small dirt lots near the trailheads. *In regards to the parking, you don't need to park in the lot unless you're going to use/visit the reservoir itself. Otherwise, just find where your trail is and park there. *No swimming The Ugly: *We did the Limekiln Trail and that was a little rough-&-ready in some areas, as the years of water damage and infrequent maintenance are starting to take their toll.

    Photos
    Lexington Reservoir County Park - Lexington Reservoir County Park

    Lexington Reservoir County Park

    Lexington Reservoir County Park - Lexington Reservoir County Park

    Lexington Reservoir County Park

    Lexington Reservoir County Park - Lexington Reservoir County Park

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    Saratoga Quarry Park

    Saratoga Quarry Park

    4.3(21 reviews)
    4.5 mi

    First hike of 2025 was here, and I'm really glad that I was able to come here. Big shoutout goes to…read morethe City of Saratoga and Public Works for keeping these trails open even on official holidays like today, on New Year's Day. There are endless amounts of trails that you can look towards -- some roll around in a circle, and some lead all the way to Sanborn County Park. While many people say these trails go nowhere, they do lead to the opening of trails that lead into the Santa Cruz Mountains. The only improvement that I would give to this park is the narrowness of some of the trails that we had to encounter -- and while there were spectacular views of the South Bay, what was lackluster and disappointing was the fact that there were barely any labels that were telling us where we were going. The bridges were a very good view of how close or how far we were from the very beginning of the entrance of the park, however, so that was a very good sign. If you're looking for a park that challenges you as much as going to Almaden Quicksilver Park, but without driving so far, then the Saratoga Quarry Park is just for you. I'll definitely be back to challenge myself to climb these hiking paths more.

    Great place for a rest stop, there is a men and women's bathroom as soon as you drive in. They have…read morea cool old structure that was part of area where they quarried the rocks with cool pictures inside of the " tunnel structure" There are also walking trails here "not really for me as I like hiking more on riverbed boulders, and things like that. Bottom line "for me this is a good place for a quick rest stop or a picnic.

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    Saratoga Quarry Park
    Saratoga Quarry Park
    Saratoga Quarry Park

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    Castle Rock State Park - parks - Updated May 2026

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