Region
Most climbed route
Highlights
- Remarkable visual prominence with famous, far-reaching views of the Bay Area and beyond to the Sierras
- Lies in Mt Diablo State Park, the centerpiece of over 90,000 acres of preserved lands around Mt Diablo
- Auto road goes to the summit where there's a stone visitors center built in the 1930s
- Extensive trail network surrounds Mt Diablo and its subsidiary/nearby peaks (North Peak, Mt Olympia, Eagle Peak)
Routes
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6 climbs • 14.4 mi • 3,736 ft gain • 3 hr 46 min
2 climbs • 13.1 mi • 3,294 ft gain • 6 hr 14 min
2 climbs • 13.7 mi • 3,804 ft gain • 5 hr 40 min
1 climb • 18.0 mi • 3,404 ft gain • 6 hr 17 min
1 climb • 13.9 mi • 3,585 ft gain • 3 hr 53 min • Class 1
1 climb • 11.6 mi • 4,040 ft gain • 2 hr 46 min
1 climb • 14.0 mi • 3,166 ft gain • 5 hr 56 min
1 climb • 14.2 mi • 3,384 ft gain • 7 hr 33 min
1 climb • 15.3 mi • 3,789 ft gain • 6 hr 4 min
1 climb • 15.3 mi • 3,927 ft gain • 7 hr 15 min
1 climb • 15.8 mi • 4,253 ft gain • 6 hr 25 min
1 climb • 16.8 mi • 4,407 ft gain • 9 hr 40 min
1 climb • 4.4 mi • 888 ft gain • 1 hr 55 min
1 climb • 5.0 mi • 1,081 ft gain • 3 hr 33 min
1 climb • 6.6 mi • 1,781 ft gain • 2 hr 23 min
1 climb • 7.3 mi • 1,679 ft gain • 3 hr 37 min
1 climb • 8.8 mi • 2,284 ft gain • 3 hr 32 min
1 climb • 21.0 mi • 3,711 ft gain • 8 hr 6 min
Latest climbs
"I like hiking to peaks enough that we parked within about an eighth of a mile of the top and it took a 6-hours to reach it. We hiked all day and visited three other peaks before we finally made it to Mount Diablo. Good times!
" — jeffreybossaller • Nov 16, 2024
"3 of the 3(really 4) peaks at Mt Diablo. Kinda crowded summit as by parking lot. Not as hard to get up as we thought. Devil's Pulpit was a nice and breezy borderline 3rd class romp. Amazing views" — ashep • Mar 20, 2021
"Lovely sunny day with Cole and Hannah summiting Mt. Diablo via the Rock City trail head (8 miles in total). We had a late start since Hannah and I did yoga at the park in the morning. Nice and warm for January - great to see so many people out enjoying nature. " — 40in40 • Jan 9, 2021
"Mt. Diablo loop out of Mitchell Canyon including Mitchell Rock, Twin Peaks, Eagle Peak, Bald Ridge, Mt. Diablo, Diablo North Peak, and Mt. Olympia. Truly epic views from the summit. A wide swath of the snow-capped Sierra was visible to the east and I could even make out Lassen Peak 180 mi north!" — klotito • Jan 9, 2021
"The hike up was enjoyable as always, with lots of vistas and lots of climbing to get your legs working.
The hike down Mount Olympia Road is miserable. There are two miles of steep, loose dirt and rocks—a serious fall hazard even with poles. The first of these miles is heavily overgrown, including poison oak. Every time I do this route, I think to myself that it's not worth it and that it would be better to skip Mount Olympia." — sareine • Jun 7, 2020
"Lovely, warm day doing the peak around of Mt Diablo. Started from Clayton at dawn and from there to Mitchell Rock, Twin Peaks, Eagle Peak, Juniper Campground, Mount Diablo, North Peak and Mount Olympia.
The descent from North Peak and Mount Olympia are a bit steep and unstable, so poles may be helpful. Also, the trail from North Peak to Mount Olympia is pretty overgrown." — sareine • May 23, 2020
"Excellent day to make this summit, clear skies, about 52 degrees and slight winds. Parked at Diablo Valley Lookout. Crossed over to Juniper Trail and proceeded to the summit. Trail is well marked and has a good mix of shade and open space with amazing views. Easy climb to the top. Actual summit is inside the lookout tower, which is accessible though the gift shop. Left the summit and proceeded to The Devil’s Pulpit. Proceeded around the summit to the East then rejoined Juniper Trail and returned to start point. Entrance fee is $10 at the North Gate Entrance. The other entrances are only $6. " — Mtstalker • Jan 2, 2020
"Survived a date with the Devil. Having only driven to the top many years ago, I had always hoped to get a chance to properly summit this puppy with a long climb from the base. Decided to start at Mitchell Canyon and hit Eagle Peak on the way up so could knock off 2 peaks from the SF Bay Area Classic Peak Challenge in one go.
When I think about the outing, it's water that stands out. I decided to forego carrying my water bottle and chugged it all in the parking lot. I usually use this "trick" for shorter trail runs so I don't have to carry anything and can run freely. But Diablo, as I should have realized, is just too long for this. The near 80-degree spring weather slowly sweated me dry on the long ascent. Not wishing to dawdle in dehydration, I stopped only for map checks on the climb up Eagle Peak and all the way to the circus maximus on the Diablo summit. Was grateful for the working water fountain at the top... and then even more grateful for the Gatorade and Snickers/M&Ms/granola bars for sale inside the visitors center. For those summit purists, be sure to tag the original summit bedrock preserved inside the visitors center (see photo).
Ran down almost the whole way, bu..." — scott • Mar 30, 2018
"As part of my training for the High Sierra Trail, a group of friends and I backpacked five Diablo peaks. Started from Mitchell Canyon, tagged Twin Peaks and Eagle Peak, then camped at Juniper Campground. On Day 2 we tagged Diablo, North Peak, and Mt. Olympia before returning to Mitchell Canyon. " — kaylam87 • May 1, 2016
"Drove up from Sunnyvale to do a nice loop hike in Mount Diablo State Park. Parked at Juniper Campground and hiked a combination of roads and trails to Eagle, North Diablo and Diablo. Got views of Golden Gate Bridge and Mt Tam." — Nimblefoot • Jun 3, 2013
Photos
Awards
Challenges
About peakery awards
Log climbs on peakery to earn awards:
Peak Badges: Earn a special badge for each unique peak you summit. See all of your badges on your Badges page.
First Ascent Award: Only 1 available per peak. Goes to the first peakery member to log a successful summit of a peak. Snag this award and the peak will forever bear your name.
King of the Mountain Award: Only 1 available per peak. Summit a peak more times than any other member. Beware: this award can be lost!
Summit Steward: Summit a peak at least 5 times to become one of its Summit Stewards. As Steward of a peak, you’re encouraged to keep that peak’s info up-to-date on peakery and spread goodwill on your future climbs up the peak.