Explore the most popular hiking 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!

Awesome challenging hike with great views.

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.

Really beautiful hike. I took the the Hetherton Loop up and back to avoid the Donner Creek fire road.
6.1 miles out and back.
1200 elevation gain. Moderate with some tough rocky steep areas.
Best I feel in spring or after a rain and not too muddy.
Will definitely do again.

11 days ago

I love this trail. It’s a nice shady trail. As another post says the trail can easily be extended. We did witness lots of wild life even late afternoon. Only minor issue was that it’s a horse trail so watch where you step as you go on the trail.

12 days ago

Beautiful clear day. Great training hike. Lots of elevation gain and views to go along with it. The falls are still trickling, but not for long as summer roles around.

I did it as a training hike on 6/9/18 and it was such a rewarding and interesting long hike. Pay attention to the trail map as it is quite confusing.

I love it! Lots of shade and the trails are beautiful.

We went on a hot day and it was not worth it. It was hazy and the view wasn't anything too exciting. The best part was all the fun critters we saw along the way! There were so many ladybugs, lizards, rabbits, and birds. That was super fun to see!
We went counterclockwise; we went up the service road and down the actual trail. Going up was fairly easy, but going down was way harder becuase the actual trail was more up and down whereas the service road was straight up. If it wasn't so hot it would have not been too challenging of a hike.
In terms of water, there was a water spicket about halfway up and at the top so that was helpful.
Pretty much no shade, wear a hat, bring lots of water bottles to fill up at the top you'll go through them all.
To get to the summit, it ended up being 13.8 miles and 3,698 feet elevation gain.

Great hot summer evening hike. Falls are still running but not for 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.

Trail ends 2 miles in, private property

Very easy to navigate, largely fire road, still beautiful wild flowers along the trails and 2-3 bathrooms as well. Quite exposed so lots of water will be good if the temp gets above 70s. I didn’t realized there was a road goes to the top with parking lot. I will definitely hike again especially in early spring time !

23 days ago

An alternative to the Eagle Peak loop shown on Alltrails is a Back Creek-Mitchell Canyon loop, which we did clockwise. The handout given to us at the visitor center shows the Eagle Peak-Back Creek loop, and this was our original intent. But: When we got to Murchio gap (huff-puff) and after our snack break, we hiked a couple hundred yards north toward Eagle Peak, got to a fabulous lookout, which is very close to the elevation of Eagle Peak. At that point we decided there was little reason to continue on to Eagle Peak, so we returned to Murchio Gap and took the trail to Deer Flat, down Mitchell Canyon to the parking lot. Mitchell Canyon was lovely, and it was a very warm day, so we were happy to have the shade! Total distance: About 7.5 miles, maybe 1 mile longer than the Back Creek-Eagle Peak loop, but actually slightly less climbing, because from Murchio Gap to Eagle Peak, the trail drops (200 ft?), then goes back up to the peak, all in the sun.
We saw quite a lot of poison oak, even in a couple of places hanging over the trail at hand- or face-height. One person in our group of 4 found ticks on his legs when we got back to the car.

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.

24 days ago

Went for a Memorial Day hike up to Eagle Peak. I hadn't been here in 10 years and it was exactly like I remembered. Hot, dry, steep, but most of all beautiful and fun. We actually did this loop in reverse, which I found preferable, and we only encountered one other group on the trail.

Bring lots of water and a small garbage back to pack out the rare garbage you might see along the way. There is a cache at Eagle Peak with a notebook to leave your mark. Some people even leave a small gift for the next folks.

mountain biking
25 days ago

Hard if you are not in shape but the trail is in very good shape. Enjoyed the views!!

Great sweeping views, really awesome! We hiked counter clockwise. I recommend hiking sticks as many parts of trail are steep with loose rock. There was a lot of poison oak, sometimes very close to the trail. Take water! We started hiking at about 830am. Good to start early. Road to Juniper has lots of bikes and traffic. $10 per car fee at gate.

Very nice hike but be warned - Middle Trail and Back Creek trail are infested with ticks at the moment. They await on every blade of grass overhanging the trail. Proceed with caution and check for ticks often.

Clockwise. Worth.

Great trail. Very steep in sections. Good workout if done quickly clockwise

First run since the early 90’s...jump right in I say. Definitely worth it.

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!!

28 days ago

This is a great loop. We start at 7am and very few people is any at this time.

Highly recommend this hike during the spring. I saw a bajillion wildflowers, hummingbirds, a family of wild turkeys, lizards, green rocks, and a rattlesnake. Watch out for snakes and poison oak! It’s a long, moderate hike. The trail map on this app takes you to the lower summit but if you want to go to the upper summit it’s only about a half mile added distance. The dirt on the descent was dry so I fell on my butt a couple of times but it was all worth it (I did it counter clockwise).

Beautiful, at this time of year the creek is a little dry but get views and still some water

1 month ago

Beautiful loop through a fairly diverse landscape, along rock formations, creeks, meadows, cow pasture, forest. Easy to extend the hike if you're motivated, we made it an 8 mile loop.

loved this trail! nice changes in elevation, beautiful views and waterfalls. there was a lot to look at and appreciate and it was a nice length that felt challenging but doable.

The return loop was pretty steep and was very sliding, Going to the summit trail was good.

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