Looking for a great trail in Mount Diablo State Park, California? AllTrails has 76 great hiking trails, running trails, mountain biking trails and more, with hand-curated trail maps and driving directions as well as detailed reviews and photos from hikers, campers, and nature lovers like you. Ready for some activity? There are 37 moderate trails in Mount Diablo State Park ranging from 1.9 to 13.3 miles and from 324 to 3,697 feet above sea level. Start checking them out and you'll be out on the trail in no time!

hiking

views

nature trips

wild flowers

bird watching

wildlife

running

no dogs

walking

forest

mountain biking

kid friendly

waterfall

horseback riding

camping

Mount Diablo State Park offers some of the best views of the Bay Area. There is a visitor center with a historic stone building. Enjoy the wildflowers and wildlife in this iconic state park. Camping is available for a fee. Dogs must be on a leash under your control at all times. Dogs are not allowed on trails. Dogs must be in a tent, camper or enclosed vehicle during the night. There are plenty of picnic areas as well as camping at Juniper Campground. Road bikers enjoy rides up North Gate or South Gate Road and the descents are just as fun. Mountain biking is also possible on many of the single track trails. Gates open 8am and close at sunset. Visitors should plan on being back at the parking area to be in their vehicles by sunset and headed out to avoid being locked in.

hiking
22 hours ago

We waited a couple days after it rained to hike this trail. The mud dried just enough and the falls were moving. The hike is best counterclockwise!

hiking
5 days ago

Challenging and rewarding! I took East Trail up (best views) and came down the less treacherous way. I tacked on North Peak too. Poison Oak everywhere! If you’re allergic, wear long sleeves and long pants.

hiking
bridge out
private property
5 days ago

This is a pretty good hike on the SE side of Mt. Diablo SP and partly on Morgan Territory E Bay Park. It’s about 2/3 shaded with a lot of great live oaks and California bays. However, from mile 8-9.5 the fire road is closed as it’s private property owned by the Friends of Mt. Diablo. An alternate route is to take the service road back to the single file trail and the Jackass Canyon. The first and the last 1.5 miles are pretty flat and there is about a half a mile to and from the parking area. which is just on the shoulder on the side of the road. There is no staging area parking, as there are private properties at the start of the trail. There were pretty nice wildflowers at this time of the year. I could see part of this track getting muddy after a few rains. Unfortunately, a lot of the sides of the trails are dug up by the wild pigs. There are a few pig traps along the way. I would say that overall, this is a medium strenuous hike.

It’s not closed...

Beautiful/peaceful hike.. and would be an equally good hike to run.

hiking
rocky
8 days ago

rocky but very fun

hiking
off trail
rocky
9 days ago

Awesome nearby trail for a quick getaway. It was nice and green and there was water in the creeks with a few small waterfalls.

hiking
fee
over grown
rocky
scramble
10 days ago

it was very open, i would recommend it to everyone.

I love the hike from before but I went on March 27th and it was closed because of the virus be careful

Did the trail from Donner canyon. Love the views, the workout level was awesome! FYI shoes with track are a must if you don’t want leave a piece of your skin on the gravel, the last part of the hike to the summit it’s very steep and has a lot of gravel, typical of volcanic peaks. Also I don’t recommend this peak in the summer season it’s bare and it’s a lot of up hill.

A beautiful day at Mt Diablo with a stunning display of wildflowers! People who know me best know I’ve studied wildflowers for years and this is the best place in the Bay Area to see so many incredible varieties of wildflowers. In abundance, we seen Shooting Star, Interior Goldenbush, Indian paintbrush in various colors, purple owls clover, milkmaids, snowdrops and Viola Calfora. I am still cross checking a few others using my many botany books which is my preferred way of studying wildflowers, you cannot always rely on google as google is often wrong. The trails were dry and it was a real treat to be away from being quarantined at home. Not a lot of people out which was nice. There isn’t anywhere on earth I would rather be then in nature enjoying my lifelong passion (hunting my flowers!).

Start at Mitchell Creek Park instead of the directions given. You’ll go to a neighborhood where parking is prohibited without a permit. See my recording. Also with the quarantine, it looks like this park will close too. It was a great hike with small waterfalls and plenty of wildflowers. If you want a good workout/have time, climb mt Olympia(recording) too. Will do it again when quarantine is lifted.

This was a very beautiful but rather king and exhausting hike. There is a lot of uphill to get to the canyon sides where the waterfalls are and at one point the trail gets very narrow and rocky with the canyon just to the side of you. A little intimidating if you have any fear of heights. But there are simply breathtaking views on this trek. Very recommended!

Highly recommend going clockwise! It was an incredibly challenging hike with incredible views. I brought more water than I thought I needed and am so glad I did. The weather was perfectly chill for how hard the trail was, about 54 degree Fahrenheit.

Great hike. Solid uphill climb for 1000 ft and then a steady descent.

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