This is the toughest one for me so far in the Bay Area and it’s took us 9 hours to complete the loop. It’s an amazing experience 2/3 rd shade there is water on the summit point and worth the view from the top. All hikers must experience and it’s not easy though.

The trail is pretty exposed so it's rough on a hot day. We brought a lot of water. I'd recommend going counter-clockwise like the route suggests as you get some shade on the way up - the road down is pretty sunny the whole way. You do go through people's property which is strange but everything is well marked. And Rock City at the top is super fun - like a playground. Definitely do this hike if you're a climber - just to go play in all the sandstone formations.

hiking
no shade
3 days ago

7/10. I took the advice of others and went clockwise. Today was hot super hot so it was slow going. Very little shade, every little patch I had to take advantage of on the way up. Pretty darn challenging. I only had 2liters of water with me and would highly recommend bringing more than that as I ran out towards the end. Thank God there was a little viewing area with a bathroom at the top. I was able to cool myself off a bit which gave me a second wind for the second half. Views weren't bad I thought on the way up was the best. On the way down was pretty boring and honestly if I did this again I would just go out the same way instead. Not much to see and it just dragged on. Not that steep just long. Took me 6.5hrs in total about 3.5ish to the top. Lots of breaks.

hiking
muddy
rocky
4 days ago

Started from the left hand side as recommended definitely make sense!!! It took me more than 5 hours to get to the top, feeling quite good, then just enjoyed my way down slowly.... totally took me 7 and half hours!!!

The rating of difficult is accurate and mostly due to incline and length. The terrain itself is mostly smooth and was only sketchy in a few small areas. Not bad overall but if you are not used to steep and long inclines then you may struggle on this one. It’s a workout and a half. We completed it in slightly over 7 hours. Definitely recommend going clockwise as this tackles the steepest part first and has really great views. If you are a peakbagger you can snag about 7 on this trail alone. The second half is a gradual fire road without many views. It is really smooth and a nice reward to cruise down after the challenging first half. The route here doesn’t include the actual summit so the mileage is closer to 15 if you explore the top. And why wouldn’t you after all the work to get there? It was warm and dry so I drank about 4 liters of water so bring plenty. Visitor center was closed due to Covid.

This will seriously test your stamina, physical and mental. I went on a relatively cool Bay Area summer day (high 70s) but once I was on the ridge, it felt pretty hot. So be prepared for the heat. Like the below reviews, HIGHLY recommend going CLOCKWISE - start on Mitchell Rock Trail, to Mitchell Rock, Eagle Peak, and then to Mt. Diablo. The way up can get narrow and tricky, and I was glad to descend on the smooth and widely paved Juniper trail. My GPS recorded 14.7 miles. Started at 8:15AM, reached Mt. Diablo at 12:15PM, and finished the loop at 3PM. Body is definitely feeling it already!

Challenging hike but a lot of fun! Beautiful views. I would STRONGLY recommend going clockwise (left at the beginning) and think a lot of the harsh reviews are from people who went the other way. The trail up if you go clockwise is still difficult but scenic and more exciting, whereas the way down is a large fire trail without much going on and sloped the whole way, so I imagine going up that would be a pain. $6 cash to park. Very well marked trails. Took about 5.5hrs but with plenty of stops/detours. This trail as marked doesn’t actually pass the summit of Mt Diablo, but it’s a short trip up the summit trail and pretty clear where to go when you’re near there. Had phone service basically the whole time.

hiking
bugs
fee
18 days ago

Hiked this 6/15/20 By my phone’s tracking this hike was more like 15 miles and 3700ft of elevation. It took us 8.5 hours with about an hour of that as breaks along the way and at the top. I drank the 3L of water I brought with me, and it was an overcast/breezy morning, so plan accordingly. Definitely recommend bringing some good snax (babybels!! Annie’s vegan fruit snax!! Wasabi chickpeas!!) It was a beautiful trail. It was fun going up to Mitchell Rock, Twin Peaks, and Eagle Peak on the way. Even this time of year we saw some gorgeous wildflowers—including some pea flowers on the way down. On the way up, me and my friend were completely alone. We saw some people going up the fire road when we were going down but felt like we had the trail to ourselves for the most part. Bottom line: this is a tough hike, but very rewarding. I’ve been hiking a lot lately in Tilden, Briones, Pacifica, Half Moon Bay, and Marin and this was HARD for me. But fun. It was difficult to gauge how this would be from reading the other reviews between the “I’m gonna lap this twice” guy and the “this was so demoralizing and I couldn’t finish it” guy. Just know it’s a real mountain that takes real preparation of some kind, but you can do it! Don’t listen to either of those knuckleheads. One other thing to consider would be to park a car at the top and skip the hike down (it was a little boring compared to the way up, and LONG).

hiking
no shade
22 days ago

Hiked 6/7/20 Believe the reviews on this trail that say it’s brutal. By the 5th hour and third peak I was questioning all of my life choices that had made me attempt this hike. I am physically very fit and had a lightly weighted pack, and still was extremely challenged by this loop. Mt. Diablo is gorgeous. I had cell service for more time than I expected, and the trail was pretty easy to follow. I only worried once that I was headed in the wrong direction, and I asked someone who looked knowledgeable for help and was right on track. Trailmaster said to watch out for ticks. I drank 3 bottles of water and ate all the food I brought with me. Super fun accomplishment and beautiful day for hiking an exposed trail.

hiking
over grown
rocky
23 days ago

6/13/20 - 15.2 miles - 7 hrs Amazing views but near brutal hike! We opted for the clock wise route and went peak bagging starting with twin peaks , eagle peak and then on to mt Diablo. The summit visitor center was fairly crowded with lots of cyclists. Make sure you get an early start and carry lots of water!! Followed instructions on https://gurmeet.net/hiking/hikes/Eagle_Peak_Mount_Diablo_Mitchell_Canyon.html

A great workout. Finished in just under five hours with a nice break at the top. beautiful views. next time we're going to lap it twice to kick our ass

Completed this hike on 6/5/20. It's a full-day hike that took us 6:50 hrs. I did the loop clockwise both times I've hiked Diablo. Clockwise means you take the fire road (7.3 mi) on the way down. The fire road is wider and the footing is more even, which I prefer for downhill when my muscles are already fatigued. The trail on the way up passes by Twin Peaks and Eagle Peaks. It's narrow and steeper than the fire road, but the trail spends a good amount of time on a ridge and you get great views on both sides. The uphill is unforgiving and it's a great workout. At around mile 5, you'll reach a junction for North Peak. It's a good shady spot for a snack break before the final push to the top. Parking at the trailhead is $6 cash only, so make sure to have exact change. There are bathrooms at the trailhead. There are two parking lots at the top. One is next to the visitor center and one is next to a picnic area, and both areas have bathrooms.

Beautiful trail. Stunning 360 deg views. Little shade so bring good amount of water. Good elevation gain but constant. Not as hard as expected. We saw almost no one on the trail. A must do.

Did this 6/6/20. Reading reviews made me optimistic about the trail. I have done Purisma Creek Trail across the bay multiple times. The trail backwards (counter clockwise) is a steep 2k ft climb and about 7.6 miles. I figured this 13 mile loop wouldn’t be out of my reach. I am young, active, and pride myself in pushing my boundaries. This loop killed me. It destroyed my body & morale. I attempted it clockwise, so starting off left. The first 3 miles or so were not difficult by any means. I was making great time. Maybe 45 mins in or so. We reached a fork in the trail, and had to take the high road to continue the loop. This was the beginning of the end. I was in very high spirits, I felt great, and wanted to conquer. The higher trail was ridiculously steep. It was exposed to sun most of the time, and turned into loose grave/ actual rocks. My partner was climbing up at one point. We had rested as soon as we got to a sliver of shade. I tried to keep our spirits high, stating we were pretty high up and we won’t have to endure much longer. I was extremely wrong. It kicked my butt the next couple of miles. It was like an endless incline. Inconceivably steep grades. Right before I got to the top, I was feeling pretty defeated, and pretty fatigued. Blind corners, that once you passed only lead to what you wouldn’t want, another steep incline. We finally got to leveled ground and there was a Hefty trail split. About 4 different trails to pursue. We were fatigued, but wanted the title. We were also making decent time, so we continued. The rest of the story I can only describe as pain and suffering. The steepest of climbs, and drops along side the mountain. There’s literally a point you have to grab rocks and climb them. It’s momentarily not a hike. It took us 5 hours to reach 3k feet, and about the half way point. I believe the top of this hike is 3850ft, so we wanted to continue, but the park closes at sundown. There was a point that we had only gone 1.5 miles in 2 hours. But we climbed a thousand feet or so. We decided we had to turn back if we wanted to get out of here before the gates were locked. It was super hard to swallow my pride and face reality that I was not going to do the next 1000ft & 7 miles in 3 and a half hours. We turned around. Went back the way we came... that same 1.5 miles or so only took us 15 mins to go back the other way. . . All in all it took us 8 hours and came out to 13 miles and some change. If you do this hike, and aren’t an advanced hiker.. please do it counterclockwise. We will be re attempting this hike, counterclockwise of course. I’ve been in sports a majority of my life and nothing compares.

I started (9;30 am) at Howe Homestead, Walnut Creek and worked my way to Briones Regional Trail arriving at Rock City by about 1;:30 pm. 11 miles. Had lunch/rest at Live Oak Camp area; took pictures. Left at about 3 pm taking the Dan Cook Trail (also called Green Valley Trail which is how it is labeled on trail markers.) Walking then on Stone Valley Rd. to Los Trampas Regional Trail to Danville. Arrived at bus stop by 8 pm. in time for bus back to Walnut Creek BART. 23 miles total hike. Very warm day, bring plenty of water!

What a beauty and what an adventure.quiet challenging at times but survived and managed. Tasted the best natural water flowing on the mountains,very scenic, yet to do summit trail. Saw a rattle snake at entrance. Going back soon for summit

LP- went a few months ago.... This is one of my favorite hikes.... Worth every drop of sweat!!! Breathtaking views up on the summit. Totally recommend it.

hiking
no shade
over grown
rocky
scramble
1 month ago

Partial shade; very rocky incline.

bit bumpy due to cows.

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