Explore the most popular camping 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.

hiking
8 days ago

Did this hike New Year's Day. 45° with windchill, a little too crowded for my tastes, but worth the struggle! 2.5 hours on the ascent; an hour and a half coming down. I suggest starting as early as possible. The crowds my partner and I encountered were probably due to our late morning start. Plenty of bathrooms along the route, but be aware that the summit restrooms may be out of order or locked. Lower summit has picnic tables and restrooms. Next time I will definitely stop there for a break and snacks.

Great hike. If there are better views please tell me where!

A most excellent hike. 15 miles and about 3900 feet of gain. I hiked clockwise like other reviewers have suggested and glad I did. Not as rocky as I thought it would be though. Not much of a view due to clouds and fog but I was not disappointed. Only saw two other hikers. 6.5 hours with a half hour hanging out in the Visitor’s Center having lunch. Can’t wait to hike more trails in this stellar park.

Got here early last Sunday and it was a quiet hike up with lots of bird song. i loved the views near the top but this is more of a fire road and not a lot of diversity of terrain. Felt accomplished to the to the top in 2 hours and down in am hour and a half. I’d do it again but prefer the Mitchell Canyon ascent for variety.

Almost constant elevation gain at a 20-30 degree incline. Beautiful scenery and five posts along the way showing you what periods the rocks are from which is pretty cool and a good reason to stop. Saw hawks, deer, and plenty of little birds along the way. One bathroom up midway and a few on the summit.
Worth it. On a clear day you can supposedly see more land around you than any other point in the continental 48 states.
$10 state park fee to drive up to Rock City.

This was a challenging one for sure. We started out from the Mitchell Canyon Visitor Center around 10:30am and we went clockwise through Eagle Point Trail. This was the recommended route from many other reviewers, and we are so glad we took their advice. The incline to the summit was at times pretty rough with steep inclines. Especially when you're close to the summit, there were long stretches of just uphill. There is a really nice visitor center at the top for you to learn about the park's ecosystem, and pretty stunning panoramic views of the bay area. It's pretty windy and cold at the top, so dress accordingly. The route back down through the Campground Trail was, thankfully, not too rocky and not slippery, which can be really rough on your knees. It was actually a nice descend as the sun was beginning to set. By the time we got back to the visitor center it was about 5:30pm. My only minor gripe with this trail was that near the summit, you'll see that there are a bunch of cars and tourists that just made the drive up to the summit, and it just kinda takes away from the seclusion you get throughout the entire trip. Otherwise, its definitely a challenging but rewarding hike that you'll be proud to have completed. Just be prepared for it being chilly up top, bring food for the long hike, and bring head lamps just it takes longer than you expect and it gets dark.

Written by my awesome 6 year old: “mount Diablo was great. It was very high. A lot of falling in the process. My favorite thing was the nature. Like an animal. For example, a bird. It was a really good hike. I think you might love it.”

Got to the South Gate at 8:00am (there is a self check in just past the gate if the guard is not on time, but the guard showed up promptly at 8am) parked at Rock City, and had the entire mountain to myself. Did not see one hiker on the way up. The signs are worth stopping and reading, great geology lesson. When you get to the summit go to the far end (away from the tower) and there is a little trail that gives you a great view of the city on a clear day. Walk the trail around the summit, great views. Took me a little less then 3 hrs, but it's not a race, enjoy the views and climb a few rocks along the way!

Amazing in the winter with rain and fog. I expected it to be a bit tougher but maybe with the heat of spring or summer it earns that hard rating. I’d highly recommend doing it on an overcast day like today though.

Great hike, was able to complete in 3 hours. Pretty challenging climb, and rewarded with gorgeous views of the area. Finding the start of the trail was a bit tough since there isn’t any service at the campground where I parked, but once on the trail the markings were easy to follow. I absolutely encourage anyone looking for a tough 8 mile hike to try this out!

This hike will easily separate the mountain goats from the average hiker. Expect to finish in 4-5 hours if you are average. I smoked this bad boy in sub 3 hours including all my small breaks. Not the prettiest hike in the world but it’s a great workout if you get after it! Make sure you have decent grip on your shoes... I went clockwise and really glad I did. It will start off steep and have lots of loose rocks. Some parts were pretty tricky to get down (for me at least) because it was so steep and my shoes didn’t have the best traction. Once you make it up to the top it’s a pretty smooth and easy way back if you go clockwise. Holla at ya boy if you get sub 3 hours on this one!

Didn't plan on this trail but we ended up here. So glad we did! Hard incline at first, but worth it when we got to the lighthouse at the top. So beautiful. Air was fresh, weather was cool. They scenery absolutely gorgeous.

It is longer than 12. Great hike overall. For the big ballers. Soreness is a virtue

Beautiful hike for the ready and capable. Not a hike for everyone as seen by the hard eating. A nice thing to know is there are water faucets at the top to refill backpacks or bottles.

It was a good challenging with a rewarding view at the summit. Some of the roads are rocky, narrow and easy to lose your footstep. Definitely recommend start out clockwise loop because at the end it will all be flat and easy fire roads for your tired legs. We took our time and enjoyed the scenery of rolling hills and mountains. My phone said 14.6 miles total because we climbed up to the summit. There was ice creams (cone and sandwich) at the visitor center for your cold sweet fix. Overall, this is a very nice trail! Prepare to spend quite a bit of time conquering it. No less than 4 hours unless you’re extremely competitive ;)!

It’s a very nice trail, but extremely tough if you don’t hike more that 5 miles. On my GPS it actually ended up being 14 miles because we did climb to the summit. If you are and experienced hiker go for it, for people like that I’m not in terrible shape but also don’t run marathons it was really tough!

Pretty chill hike, pack water if it’s summer bc it can get hella hot

Nice hike with many butterflies, birds. Went left at Deer Flat down Meridian Ridge to Bald ridge to North Peak to Summit. Looped down Juniper trail and back to Mitchell Canyon. very enjoyable day.

A long hike with lots of uphill but nothing technical about the hike. We did the counter-clockwise version which was probably a mistake because the downhill is pretty tricky. Probably best to come down along the fire road. Nice views from the top. Best to go in the Spring or Fall, as Summer can be too hot.

Trail was a great length for the evening. Elevation change was just right for a workout and the views and sunset were perfect. Would definitely do this one again.

I seem to have a thing for missing the best hiking time in the spring and starting in the summer when everything is hot, dry, and dying. Did this hike on a hot day (high 80s for most of it). The trail is very exposed so bring plenty of water and sunscreen and maybe a towel for your sweat. There are many spots to appreciate the view but it is very strenuous - we lost a guy on the way up...I hope we see him again someday.

At the base of the peak, we went the wrong way and reached North Peak instead of the main summit (which is about 300ft higher) so we went back down and back up the right way. It didn’t have much consequence besides taking an extra hour and making us feel kind of stupid. I don’t recommend unless you’re really into radio towers.

At the summit there’s a cool museum about the history and wildlife of the mountain. The word “Diablo” was used by Spanish soldiers to describe where a few Native Americans mysteriously escaped, but the mountain itself almost literally rose from the depths of hell (i.e below the earth’s crust).

We also met a cricket with one leg. I asked it how it lost its leg but it just spat at us. I can kind of guess how it lost its leg…or conversely, how it managed to keep the other one.

Would have been an easier hike had I not forgotten my water

Great trail on the mountain I lived in the shadow of for 25 yrs. Several others that are better but still memorable. Best done in the spring ...

Went on a very hot day (temperature reached about 90 by midday), but started around 7:30 in the morning to avoid most of the heat. Hiked counter-clockwise and glad we did -- the trail was much more technical on the way up, which I prefer. As noted in other reviews, we measured the trail to be about 14 miles instead of 11.9, so that is definitely something to take into consideration. Views from the top of the mountain were really nice as well.

Nice hike. Took about 2 hours at a leisurely pace. Great mix of scenery and views.

I lived in the bay area for over 10 years growing up, with Mt Diablo always looming over me, reminding me how small I truly am in this world. After moving away, i had to go back to conquer this beast, and she was well worth the trip! Stunning views, changing climates, the day I chose was misting for a good half of the hike, and the rest was up in the clouds above the rest of the earth. Unfortunately, there was a rather large parking lot greeting me at the top, but nothing could shake the accomplished feeling of defeating Mt Diablo. Onto the next challenge!

The trail hiking wasn’t too hard mission peak felt harder. What was harder was figuring out what was the trail in certain areas. Without AllTrails I would have been lost so many times!

Summer is not my best friend for hiking inland because it gets too hot and lots of rattle snakes appear. So to avoid it all I went las Tuesday and started at 6am this 11.9 hike in Mt Diablo. Twin peaks, Eagle peak and Mt Diablo Summit. Elevation goes between 300 to 3848ft going up and down the peaks. There is so much wild life out there! I got to see all kinds of insects, birds, deer, rabbits, bobcat, lizards and small snake. Thank goodness, no rattle snakes this time! The views are amazing! If you go early it is much cooler and sometimes there is a lining of fog covering the surrounding cities of Clayton and San Ramon. Pretty much golden and dry during this month except if a creek running parallel to Mitchell Canyon Trail. In spring time Mt Diablo turns completely green and beautiful!

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!

Awesome challenging hike with great views.

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