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Mitchell Rock, Twin Peaks, Eagle Peak, Mount Diablo, North Peak and Mount Olympia Loop [CLOSED]

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Mount Diablo State Park

Mitchell Rock, Twin Peaks, Eagle Peak, Mount Diablo, North Peak and Mount Olympia Loop is a 15.4 mile moderately trafficked loop trail located near Clayton, California that features beautiful wild flowers and is only recommended for very experienced adventurers. The trail offers a number of activity options and is accessible year-round.

Distance: 15.4 miles Elevation Gain: 4,606 feet Route Type: Loop



nature trips

bird watching



wild flowers




no dogs

To prevent the spread of COVID-19 there is currently no vehicle access to this trail or others in the park. See here for more info:

If you’ve never done it at night make time and space for it. Challenging and fulfilling. Stopped for 45 at the summit.

Wow! Best day on the trail yet. Constant amazing views from the juniper campground all the way down to Mitchell rock. You will find yourself hiking alongside a steep slope for miles about 2-4 from juniper. An excellent way to close out a 3-day backpacking trip. Would very highly recommend this trail for any level of backpacker if split into 3 days/2 nights.

An excellent second day on the trail, North peak and the Diablo summit were tackled. We were met with gusts of 40-50mph, and we put on our full cold weather gear. Trail was shaded mostly, and the views today have been the best. The partial cloudiness shrouded the east bay and made for some amazing photo-ops. A breathtaking pink sky was the sunset. Update: the night at juniper was very cold. Sleep with a fresh pair of wool socks on, and a sleeping bag rated for 40 degrees or less will make your night comfortable. In addition, make sure to stow away all belongings in the provided critter chest. A raccoon was hanging around our campsite

On a 3-day trek, two nights total. Spending the night on mt. Olympia off the trail, then juniper camp the second night. The first night is a dry camp, so we had to pack in our own water for cooking, cleaning, and drinking. since there’s no official camp until juniper. With an amateur group, and we seemed to do fine. Packs are heavy initially, around 40-50 pounds apiece due to the dry camp on the first night. Take caution on some parts of the trail, they are steep and may be slippery and are narrow. Highly recommend, absolutely beautiful views of the NE side of Diablo and north bay

no shade
Sat May 14 2016

Great training. Wouldn't recommend for anyone looking for a "fun" hike.

8 months ago

Sun Mar 31 2019

Sat Mar 30 2019

Wed Feb 20 2019

Sun Oct 28 2018

Wed Feb 07 2018

Fri Apr 29 2016