nature trips

wild flowers



no dogs

trail running



mountain biking

kid friendly


horseback riding

At the eastern fringe of the San Francisco Bay Region, Mount Diablo, elevation 3,849 feet, stands alone on the edge of California’s great Central Valley. At this point, the Coast Range consists only of low hills, none high enough to block the view from the upper slopes of the mountain. As a result, the view is one of the best in the bay. Many visitors to Mt. Diablo head straight for the summit to enjoy the famous view from the observation deck area. Summer days are sometimes hazy, and the best viewing is often on the day after a winter storm. Then, you can look to the west, beyond the Golden Gate Bridge, to the Farallon Islands; southeast to the James Lick Observatory on Mount Hamilton at 4,213 feet elevation; south to Mount Loma Prieta in the Santa Cruz Mountains at 3,791 feet elevation; north to Mount Saint Helena in the Coast Range at 4,344 feet, and still farther north to Mount Lassen in the Cascades at 10,466 feet. North and east of Mount Diablo, the San Joaquin and Sacramento Rivers meet to form the twisting waterways of the Delta. To the east beyond California’s great Central Valley, the crest of the Sierra Nevada seems to float in space. With binoculars, you may even be able to pick out Half Dome in Yosemite National Park. Mount Diablo State Park is one of the ecological treasures of the San Francisco Bay Area with entrances in Walnut Creek, Black Hawk, and Danville. Every season in the park has its special qualities. Discover for yourself the mountain's beautiful wildflowers, its extensive trail system, fascinating wildlife and distinctive rock formations. View the stars from its lofty heights, bike ride to its 3,849 foot summit or explore the more remote trails by horseback. The park offers hiking, biking, horseback riding and camping. 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.

Beautiful views! Easy trail.

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

Beautiful hike! Loved seeing the waterfalls. We went in March and it was muddy most of the way but still lovely. We went clockwise and there was lots of steep uphill spots. Would like to do it again. Round trip from street to loop and back was almost 7.5 miles.

Great hike in the rain!

very beautful

12 days 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.

Black Point Summit and & Olofson Ridge. Excellent morning!

Visited on a sunny Sunday afternoon. It's a wonderful hike with multiple tiny waterfalls on the way. We did the loop anti-clockwise and found it to be moderately challenging. There are certainly a few sections of steep climbing, but nothing very strenuous. If you're visiting Mt. Diablo park, this should definitely be on your list of hikes!

Definitely NOT moderate. It was a great hike but there was interesting spots and I questioned my ability to continue lol. Great views and lots of friendly people along the way. Part of the trail is being closed and there were no signs

this app and place is so fun and refreshing!!!!!!

NOT MODERATE. Not at all. Be sure to check the map often as it was easy to get off trail...at one point we were basically rock climbing on a section of trail one of the rangers said they were planning to close off soon.

15 days ago

Love it! Basically it’s Cardinet Oaks Road all the way (approx 30 mins) to the point where you can turn either left or right for the loop itself. I suggest going clockwise. The Falls Trail is my favorite.. then the second - and last part - of the loop, Middle Trail, can be challenging for some. Can be muddy!

Beautiful trail! Definitely worth taking single track trails when you can, see below recommendation there. So clean and lots of water right now. Trekking poles highly recommended. Trail is not well marked back in the falls trail area so bring your phone/map and make sure you don’t get too side tracked on a deer trail?!

Very green and scenic during this time of the year! I would recommend hiking during the winter and spring while it’s still green. The trail are not marked well so make sure you pay attention and follow the map on your phone. Parking is very difficult, be prepared.

I wouldn't say this is an easy hike but if you are contemplating whether you should do this or not due to all the people saying it's hard, just go do it man.

My buddie and I got to the top in 3hr and down in 1.5hr. What more do I have to say?

Mt. Diablo comes alive in the winter!

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

This is my favorite winter hike. I like single track so I take Donner to Hetherington to Wasserman and avoid a good portion of the fire roads. On the return I get to Back Creek via Tickwood.

What a great hike.

23 days 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.

Beautiful Spring Day in February!

26 days ago

Beautiful Spring Day in February!

28 days ago

Love this hike! I’ve done 3 different trails & I love them all

A bit more than moderate but a cool hike

Great day of hiking celebrating another friend hitting “Mile 60 on the trail of Life!” Our first time hiking Mt Diablo- tips: Check weather before you go- we layered up and glad we did as the wind was in full force as we approached the Summit - go CLOCKWISE when making this hike, the fire road is much easier coming down ( not near as pretty- but easier) plan on 8 hours. Including a couple “snack and map” breaks, pictures and lunch it took us 7 hours 41 minutes. Challenging however doable.. We used hiking poles and found them beneficial. BEAUTIFUL NATURE at every turn!

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