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    Las Trampas Regional Wilderness

    4.5 (150 reviews)

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    J Christian E.

    Super clean trail, started my hike near the Hap Magee side. The trail is dog friendly and the views of beautiful houses and open areas. There are shaded areas of the trails that have great tunneling of winds. Took my 7 month old puppy and we did a little bit over 2 miles before turning around. A mile in, there is a nice water station for dogs and people if you forgot to bring water and/or refill.

    On the Rocky Ridge Trail - Nice inclines
    Shayla B.

    An excellent spot for a heart pumping hike along the East Bay hills! I don't know what took me so long to finally hike here, but I'm so glad that I finally did. I think I've become so spoiled by the shaded hikes in Berkeley and Oakland. But, hiking in Las Trampas reignited my love for being amongst the open rolling hills. Hiked the 5 mile Rocky Ridge View loop trail with a friend, and it was an excellent little workout. Nothing too strenuous, but just the right amount of inclines to get the heart pumping. I'd say a moderate hike with a few difficult hills to climb. The Rocky Ridge View trail is basically completely exposed. We started our hike around 9:30 am which is honestly kind of late for me for this type of exposed hike, but luckily we ended it right before it started to get really hot. We started counterclockwise on the paved path. This part of the trail inclines for about a good mile to a mile and a half until it levels off to some spectacular views of the city and beyond. You'll even have some amazing views of Diablo in the distance. The trail switches from paved to dirt as you ascend higher up the hill. We hiked this trail during mid-summer, so the hills were pretty much all brown. I'm sure it's beautiful and green during the early spring time. Despite the brown hills, I was still able to find a few wildflowers along the trail. Pretty sparse around that time of the season, but it was still great to see them out there. The trails seem to be endless, and you can connect to so many different side trails to lengthen your hike. Definitely lather up on the sunscreen and bring plenty of water to keep yourself hydrated. One thing that I've learned about hiking in these types of hills is that the sun can really be deceiving at times. Luckily there was a bit of a breeze, so it didn't feel as warm as it actually was. There actually weren't too many people out during COVID, and most of the people that we saw were wearing masks. Also, the parking lot fills up quickly here. I arrived around 9 am, and I snagged one of the last few spots in the lot. There's an overflow lot available and some street parking if you can't find any in the main lot. All in all, I'm pretty impressed with this park. Would love to explore some new trails here when the hills are green.

    Ann L.

    Back at Las Trampas Reg Park for a hike Sat 4/10/21. Free parking at the end of the road w/ vault toilets. During Covid19 everyone is a hiker so you have to go before 9am at all park, otherwise you gotta park further out on the road and walk in. Did Rocky Ridge View trail going up, then we went into EBMUD land (friend has a permit). Lots of climbing with rolling hills. Wildflowers are nice right now, lots of poppies, fiddlenecks, & lupines. After lunch we went back into Las Trampas, back on Rocky Ridge View trail, left on Elderberry Trail. Lots of up and down the entire park. Just ok to meh park for me. Friend likes it.

    Walking Oakland to Danville.
    Markus N.

    As I stand in a 30-person line of mask-wearers to buy spaghetti sauce and milk I remember Tuesday when we walked from the Redwood Gate on Skyline to Danville almost 20 miles through the lands I'd spy from the sky on the final approach to OAK and wonder what's down there. Down there along the San Leandro reservoir is largely comprised of the protected EBMUD watershed but east of that making up the last wall of hill before Danville is Trampas. There's parking reached via Bollinger Canyon and a combination of mask wearers and people without them a few jumping into the bushes as one approaches just in case. Cows, hawks, outcroppings of rocks that tempt you to climb, and a network of looping and longer trails that offer something for just about every single body. It took stay at home guidance to get me here and I say without hesitation thank you reaction to this condition that motivates these outside activities bc but for that who knows when I'd have visited. Even though every time I flew over I'd say to myself: self, we really need to go check that out. It looks cool. Seeing that nobody is flying anymore what better time to do it. Do it. You. Yes you. Do it now. Sunshine is the best disinfectant. Even better than drinking bleach. It is.

    Isabella S.

    Lots of trails with excellent views both to the east and to the west. The ridges are absolutely wonderful to hike on and have a diversity of flora and fauna. In the late spring there are tons of hummingbirds and butterflies. Gates close at 8pm, but if you park in the lot before the gate it only adds on a short walk to get to most of the trail heads. There are ticks out in good numbers come spring, so always make sure to do a tick check when your done.

    Chris L.

    "Try Secret Entrance through the Nudist Colony!" No I am not making that up! Here's the rest of the story: This park is one of the largest in the East Bay Park system. It is also a rugged park, with a huge variety of trails, many of which are for advanced hikers. There are a large number of entrances, some well-known, some secret. If you continue down Bollinger, you will come to the main entrance. There is a good-sized parking lot, which is normally free to use. There are also some outhouses there. When you are driving inside the park, watch out for the huge speed bumps. If you're not ready for them they will really rattle your brain! Be sure to plan your hike carefully, and especially bring lots of water. Many of the trails do not have water supplies, or restrooms, for that matter. In fact, I don't think I've ever seen a restroom anywhere, except in the parking lot. Today I went on a 6 hour hike, which was really challenging. I started near the stables, goimg up the Elderberry Trail. Today, after recent rains, it was muddy and steep. Technically, you can take a mountain bike on the trail, but I would be astonished if any mountain biker actually did. Today, it was non-ideal conditions. It is not one of my favorite things to have mounds of sticky mud on my boots. On the other hand, it probably works off more calories having several pounds more on each foot. It's sort of like putting your foot in a big tub of mush. From the Elderberry Trail, I went up to Rocky Ridge View Trail, Devil's Hole Trail, and then to a remote trail called Ramage Peak. This last trail is actually on East Bay MUD land, and you need to get a permit ahead of time to hike on that trail. You can do it online, and it's cheap. There is actually a secret entrance to the park's Devil's Hole Trail, but to use it you have to go through a nudist colony. I was not brave enough to ask, so I used the more traditional route, where one actually stays clothed during the hike. I guess I'm sort of stuck in my ways. If one of you Yelpers tries hiking through the nudist colony, please report back with your results.

    Las Trampas Regional Wilderness-East Bay Regional Park District 5/1/2021
    Korina Y.

    5/1/2021 Saturday Location: 18012 Bollinger Canyon Rd, San Ramon, CA 94583 We parked by the sign "Las Trampas Ridge Regional Park " and walked to the Chamise Trailhead since the parking at the trailhead was full already. Took the Chamise Trail to the junction which branches out to Las Trampas Ridge Trail, Mahogany Trail . The Chamise Trail was in the grassy area and the view of the hills all around is green and really pretty this time of the year. Up to this point is an easy peasy hike. We then took the Las Trampas Ridge Trail, hiked to the Eagle Rock and ate our cheese steak sandwich by the rocks . There were lupines , vetches and lots of other wildflowers blooming. The trail to get here gets narrow and you are up pretty high. I'm vertigo so it made me a bit nervous but if you're not vertigo like me you should be fine. I try not to look down in the canyons. We continued on the Las Trampas Ridge Trail till we reached another junction which splits to sulfur springs trail , Las Trampas Ridge Trail and Mahogany Trail. The area by the marker is filled with wildflowers so beautiful. Up to this point is pretty easy hike. We made a mistake of taking the mahogany trail and the reason I say that is because there are three areas where the trail gets super steep , loose dry sand on the dry gravel. I was seriously nervous going down on those areas , my hands sweaty , my heart pounding and my legs shaking. I didn't want to plunge into the canyon or break my ankles in middle of the wilderness. I wished there were some railings you can hold on to but there is absolutely nothing to hold on to. Even with the trekking poles it was challenging going down on these areas. Thanks goodness we had our poles though , would've been absolutely nightmare without them. We managed to get down those scary steep areas and the trail started ascending and we thought "oh no we are lost cuz its supposed to be descending not going up" and this area is deep in the canyon kind of dark so I was scared. Nobody else was on the trail except us. As we were hiking uphills thinking we are lost , I remembered that from the junction on top of the hill , mahogany trail went down so if we're going up we should be on the right track. And we were. We finally arrived to the junction which splits up mahogany trail, Chamise trail and the ridge trail. Phew .. .. It was fun , a bit scary , a bit challenging but all in all it was a great hike as always. (I definitely wouldn't take small kids on mahogany trail nor trapline trail )

    Jamee S.

    I hiked the Rocky Ridge Loop Trail. It was a beautiful sunny spring day. It was a Thursday morning so no one but my hiking friend and I were on the trail until our descent where we ran into 2 other hikers. It's uphill most of the way up on a paved road then we hiked on a dirt path that was more uphill. Beautiful clear view of the green hills. This is a great workout. It's about 5 miles and took us 2 hours. Lots of wildflowers but also lots of lizards. We also encountered a garter snake which caught us by surprise. The lizards were enough to startle us but the snake got us screaming! Hahaha. Good thing it was the only one we saw. A few cow pies, one fresh one. We could hear the cows mooing but didn't run into any. The hike downhill (Elderberry Trail) can be slippery and muddy. Be sure to wear good hiking shoes and socks with decent traction.

    California poppies in excess (taken at 10:45am)
    David M.

    Open during quarantine but very crowded on weekends!! The first time I came here was at 6am on a Thursday and during the whole hike, I only saw a couple other hikers on the trail. During the early mornings however, the California poppy flowers that Las Trampas is so recognized for don't open up yet and it can't be seen in its full glory. The elevation of the mountains and the mist also results in some areas to become super muddy even without rainy weather so hiking boots are definitely recommended! Second time I came was on a Sunday morning at 8am (right as the gate opened). Wasn't too crowded initially but around 10am it got suuuper busy which made staying 6ft apart difficult with most of the paths being really narrow. Everyone still makes an effort to respect their distance but it also gets hard to move out of the way without trampling on the flowers on either side. I'd say the flowers open up into full bloom after 11am or so but with how crowded it is, I'd try to come on a weekday if possible. Besides the vast amount of poppies, it's also a nice hike with view of the open mountain ranges and wildlife.

    Angel L.

    12,000 steps, 106 flights (based on my Apple watch), ~2,000 elevation (based on Snapchat lol), and ~6 miles to the top and back. It took a little under 2 hours to complete and I think I found my favorite hike in the Tri-Valley so far! I came after a night of rain so there were parts that were muddy, making it a bit more challenging. This hike resembles Mission Peak in Fremont, but a bit more fun since you can see beautiful hills, walk under forest shade, and have a steep incline to work your butt off! Usually hikes feel eerie when I am alone, but this hike, with its wide paved & well lit paths, proved to be both beautiful and easy to navigate. I saw people of all ages: children, adults, and some elderly. It does eventually rise to 2,000 ft (Mt. Diablo is ~3,800) so it's not an easy hike. I probably should have done more research beforehand but luckily I hike and run pretty often so it wasn't a problem and I enjoyed the uphill battle! For beginners looking to hike to the peak, it will be a good idea to take rest breaks and bring water. For those with knee or joint problems, I'd consider wearing a brace/bringing a hiking stick. It's also probably worthy to note there isn't cell reception in some areas. Most people wore masks and it was nice to see/greet so many people on the hike. I guess everyone thought it was a good idea to hike New Year's Eve! I recommend parking by the "Las Trampas" sign off to the side instead of the parking lot because there's a trailhead close by.

    Molly L.

    This easily steals the crown for my favorite Bay Area hiking spot (yes, even winning over Mt. Diablo). The cool thing about Las Trampas is that there is less foot traffic than Mission peak and Mt. Diablo and way better views. From the very top, you can see the entire Bay Area and even a stunning view of Mount Diablo in the distance. There are many reasons I could delve into about why you should go to Las Trampas, but that would surely exceed any word limit Yelp has to offer. Pros: -Great cardio workout (uphill really works your quads and booty) -More Scenic regional park in the area -Not super crowded on weekdays -Bathrooms at the bottom of the hill -Ample Parking -Lots of wildlife to view (Lizards, butterflies, and various rodents) -Numerous trails to pick from that range in difficulty -Windy at the top, so you won't overheat too much! Cons: -No cell service, if that matters to you. -Windy, if you don't like wind. Bring a jacket for the top of the hill. Difficulty: 5/10, not the hardest hike to do, but may be limiting to some with bad knees and back problems. I loved being able to explore this area -- it truly is a magnificent place to hike. I can't wait to come back and go a little farther up the trails when I have more time. :)

    Las trampas
    Charde H.

    This is my go-to spot for hiking if I want a steep incline and to break a sweat. I consider myself pretty fit but I always leave this place with sore glutes and thighs. This is open during COVID-19 and has parking for free which is a HUGE plus. If you want a easy walk, you might consider another trail as this one can be pretty intense. You can also take the path that leads you towards the horse stable or just walk along the road that leads you to the dead end ( were the parking lot is) and enjoy the scenery from there. Both of those paths are pretty flat. I believe there are many trails you can take on this path but I've only taken three, both of which were incredibly steep and filled with deep inclines. Since you're so far tucked way into the mountains, the views here are breathtaking and the trails are very quiet and peaceful. The higher you go up the trail, the more stunning the scenery is. You'll find panoramic views of rolling hills and adjoining mountainsides. At the top of the mountainside is a nice ilttle bench where you can recline and relax. If I had one complaint, it's that there is a ton of cow manure on certain sections of the trail. There are herds of cows that frequent this place so depending on where you walk, you'll have to constantly hopscotch over piles of dung. The higher you go up the trail the less droppings you'll find however. Bring your water, snacks, camera and have fun! Ji

    Heather D.

    Lots of parking on a Wednesday afternoon. Maps available at the entrance but I was a little confused where to start. Good workout with lots of vertical, beautiful views and tons of cows to meet.

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    Ask the Community - Las Trampas Regional Wilderness

    Review Highlights - Las Trampas Regional Wilderness

    There are several trails to choose from, we took the Rocky Ridge trail that is paved and steep up to the summit.

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    Really sizeable, spacious park that has lots of fields to host sporting events. There's a small…read moreamphitheater, skate park, events center, and until it is the location of local government offices. I'm not just reviewing this place on a recent, pleasant dog walk (which is a great place to do and they have doggie fountains here as well). No... my roots go way deeper here. Growing up in the area before there was the large Target and City Lot nearby, before the local government offices, this park is where me and a close knit group of friends would go every night. We weren't causing any trouble. We just didn't really have anywhere else to go, but we all looked forward to hanging out most nights, especially during the summers. We would skate in the parking lot or possible play basketball (they had a few full courts where the offices are built now). At one point a few of my friends worked with the city to help design and build out the skate park (I see there names on the plaque to this day in late 2025). I remember my friends putting on and being part of small music fests that was held in the amphitheater area. I even remember working some events held at the event building on the south side of the park. Just a great park with lots of parking, events schedules, and just every day things to do. Lot of personal memories as well.

    Central Park in San Ramon looks pretty standard at first, but ended up being better than expected…read more I came for a friends' kid's birthday party and even on a weekend it felt open and not too crowded. The grass was green and well kept, and there was plenty of space for kids to run around. The covered picnic areas with a roof was so nice and perfect for rainy days or a hot sunny weather, and it offered many things to keep kids entertained such as a good-sized playground. It's clean, easy, and works well for group gatherings. Only downside is the restrooms were available but not very clean, and parking can get a bit tight. Overall, a reliable spot for things like birthday parties without feeling chaotic.

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    Don Biddle Community Park

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    Perfect spot for play dates, birthday parties or just to exist. That's what our daughter loves to…read moredo every time she visits. Since there are SO MANY play areas and structures to explore and enjoy, I have never heard her say she is bored. Our daughter can exist here for hours with snacks and water at hand. Kids are ALWAYS here so it is easy to find a playmate, if needed, for the day. There are restrooms directly behind the big play area with multiple stalls. It is well maintained and usually stocked. There are lots of benches, both with and without backs, surrounding the various play areas. There are numerous hammocks surrounding the park (closest to the swing area).. Be careful not to get too relaxed and misplace your lil one(s). It gets pretty hot out here and with the absence of shaded benches, bring a blanket to sit beneath a tree or an awning and chairs if you're fancy. Parking is directly outside the park. With ample parking it is difficult to not find a spot. During summer months it gets a little harder do arrive early. A grass area separates play from parking. There are plenty of bike racks as well. If you do not feel like driving the Dublin/Pleasanton BART station is a 12 minute walk away. If we ever explored this option I would have to bring a wagon. After play I doubt our little one would want to trek the journey. There are very few food options nearby so definitely come with snacks and drinks. There are working water fountains throughout the park (not refill stations). Come, enjoy! You can make a day of play here without spending a dime.

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    Las Trampas Regional Wilderness - parks - Updated July 2026

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