Explore the most popular forest trails in Mount Diablo State Park with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers and nature lovers like you.

Great views and definitely a fun hike. The loose gravel can be rough but well worth the time.

We hiked this trail mid June and it was beautiful. The up hills were a challenge but the view once you get up into the trees and can see the skyline is great. Definitely a great workout!

Great hike for 360 views around mnt. Diablo. Started at 9:30 from Juniper Campground (note it takes 25-30 min to drive the curvy road full of bicyclists on a Saturday morning from the park entrance.) I took 4 hours 45 min including 30 minutes to explore the summit. Trails are steep at times but never for too long.

i gritty hike and some decent formations to view. the hike has two tough sections - near mt. olympia and new the summit. overall it can be a moderate for a pro to hard for occassional hiker. the summit and the ridge trail after my olympia can be windy. it can be a good training ground for longer hikes.

Great hike! Lots of shrubbery needs to be trimmed. You end up going downhill for the first mile and a half then making your way up the back loop. Hike ends with an easy downhill. Start early - the trail started to get busy with Juniper Spring hikers around 12, since the trail overlaps.

Some great views but whomever made the markings of this trail did a terrible job, it was very confusing. Also, I don’t think it was very difficult, not sure while it is labeled that way.
IF we went through the proper trail, started at Juniper trail then you have to hop on a couple of trails (forgetting the names of them now but luckily a park ranger helped us figure out where to go) then you go down to back out to the road and there is one tiny little sign that shows it’s the North Peak trail but then there is no other signs after that... you just keep going. Once we got to the top there was building of some kind off to the side and we walked around that and there is a nice Peak, it sure if that was North Peak... but like I said the red lines that show you how to get to the trail were terrible and confusing!!

hiking
1 month ago

Hiking on Diablo is one of the biggest reasons why we all over-pay in rent and mortgages. If you’re not making use of such a beautiful mountain, that’s in your backyard, you may as well move to a different state. This is an amazing and challenging hike with phenomenal views, beautiful wildflowers, interesting animals, shade, sun, creeks and lovely smelling vegetation. This hike is full value and I can’t wait to hike it in a wet season to get a different experience. I would give it 4.5 stars only because a couple of areas have poison oak growing over the trail. Not a big deal if you wash everything as soon as you get home, but it slowed my pace and took my eyes off the scenery in some areas. 6 hours moving- 7 hours total.

Thanks to Mike Siders‘ review, I decided to go on this great hike, as I’m in the area for a business trip. I’m glad I did this hike - a great experience in such a beautiful area.

Had a blast on the trail. It wasnt too hard and the trail is well marked and the people on the trail were friendly. Just be advised when you reach the summit you will be greeted by a parking lot full of non-hikers and tourists. Overall a good hike.

Fantastic hike today! I did it clockwise from Juniper Campground. There are some steep parts with loose gravel on dirt that I wouldn’t want to do going downhill, so I recommend clockwise.
There were so many gorgeous wildflowers! I also saw a coyote. I added on the spur trail to the summit, since I’d never been there.
There’s a lot of poison oak. Most of the trail is wide enough that it’s easily avoided, except for the Bald Ridge section. Wear pants and long sleeves! It goes up to shoulder height.
Most of the trail is exposed, and it felt warm even though it was under 60 degrees when I started. Wouldn’t want to do this on a hot day. I’ll definitely do it again, though!

1 month ago

So beautiful!! Bring a lot of water and go early. A lot of trails and mostly uphill. Walking stick would be useful. Watch for rattlesnakes we saw one on the trail and even saw a baby scorpion!

Nice hike. I think I would do it the other way around because Eagle Peak Trail has a lot of small rocks/talus for long stretches of trail that you can slip on.

hiking
1 month ago

Wow, this one is a doozy! I followed another review and used Juniper Trail and Meridian Ridge Trail instead of back tracking Not sure if this made it easier or harder but my total distance was just about the same, 16.2 miles and slightly more elevation. I wanted to do more of a loop and was happy about the decision. This is a solid hike but it can get windy on the peaks which can be a bit brutal if you aren't prepared for that. I was actually surprised this hike didn't end up being harder, overall it was super enjoyable but it's definitely a long hike, we finished in a little over 7 hours of moving time. If you want an all day hike and to see all Mt Diablo has to offer, highly recommend this one!

This was a great hike and a great time of year to do it.
Everything was still green and blooming. The marine layer kept it cool today.
We did the hike counter clockwise and added the Juniper and Summit Trail loop to it.

Great trail to do with kids. There were a lot of little creeks in the middle.

Steep hills and an awesome view on top of the mountain.

Awesome hike. Do the Moses Ridge out and back off the Juniper Trail (adds 0.8 miles) for some more great views.

It was a great scenic view. you'll be awed by the various sizes of mountains, sky view, fog mingling among mountains, trees , landscapes etc.
I hike with my two daughters 8 and 10years old from Rock city parking lot to summit of Mount diablo. it took us 3.25hrs up and 2.5hrs back. it was a great hike. i'm proud of my girls!!. the only scray part was the stretch from a big water storage tank to devils spot was a single file hiking which any mistake could be disastrous. my recommendation at such spots are to have a firm gripping shoe and or a hiking stick or suffice like we did : have a normal sturdy tree branch stick we picked from the ground. at this spot it was kind of slippery during returning back so we had to bend a little to enforce our grip. I'm sure experienced hikers won't have a problem.
The kids in the end loved it all.
you'll need lots of water going up,(at least 3bottles each person) you'll be able to refill at the summit.
we saw a rattle snake which was basking itself in the sun. there was no need to panic. The kids got to play with sand also on the way. just being kids.
on arrival back at rock city, the kids had 5mins to enjoy the rocks , cause as you can imagine we were all spent.
I'm sure you'll all enjoy the hike.

We did this clockwise, starting at the parking area in the back of the Juniper campground. Views are amazing as you make a full circle around the summit of Mt. Diablo. There are some rather steep sections in this loop. The Bald Ridge Trail in particular is like a roller coaster, twisting and turning and steeply climbing up and down, but there are some spectacular view points in that section. It tooks us about 4 hours with a lunch break at the summit.

NIce Hike,
Not to hard and just the right amount of uphill before heading back down. We did spend some time scoping out some of the other local trails.
Everything is nice and green still.
Uploaded tracks of 8.6 miles due to site seeing.

Lovely trail with views. Feb and March seem like a great time to go to avoid the heat and rattlesnakes.

3 months ago

My route is slightly different in two areas: 1. I included the Falls Trail 2. I did not use Bald Ridge Trail to go Eagle Peak. In stead, I use Juniper Trail and Meridian Ridge Trail . This creates a larger loop with little repetition. The view is stunning. But AllTrails’ software problem got exposed again: the recording showed many line segments. That is disgusting.

Great views and you just feel like you are in the wide open with no one around.

3 months ago

Great experience! expect to be hiking for 8-10 Hrs based on how often you stop. Plan on bringing at least half a gallon of water per person and plenty of snacks. Mt diablo is an awesome spot to rest before finishing the rest of the trail.

What is good about this trail: 1. Great views! This side is facing the Bay, so as you go higher (and especially on your way back) you'll see the Bay, Walnut Creek, Concord, Dublin/Livermore and other local towns. 2. Sun. It could be good or bad depending on the season. Makes it a great winter hike, but could be too hot for summer (then look at the East side tails). 3. Smooth trail and mild incline. Relatively gentle, not too hard. 4. Water and restrooms. 5. Educational posters along the way explaining the history and geology of this area. The not so good things: 1. Entrance fee. You need to pay to get there. 2. Limited parking (to compare there are trails from Clayton with more parking and no fees) 3. The trail follows the road so it could get noisy. Overall, it's a good half a day hike for anyone in reasonable shape, great for kids, just make sure the weather is not too hot and come reasonably early to get a parking spot.

Great views all around! The first mile makes for an awesome workout...nothing but climbing!! Would love to live close to some climbs like this so I can do repeats as my evening workouts.
My party followed this route up to the summit then north peak. From there we went on the trail for the Grand Loop Trail.

hiking
3 months ago

Beautiful Spring Day in February!

Knocked this one out today in about 3.5 hours round trip. I will probably do it again, just wish there wasn’t a road all the way to the top that allowed tourist to just drive up. I may be old fashioned, but the best part of the hike should be the summit, and that is greatly diminished when everyone can just walk 50 feet from their car to the summit.
If you are more hardcore into hiking and camping. This one will probably just annoy you.

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