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Four Peaks Loop is a 13.8 mile moderately trafficked loop trail located near Clayton, California that features beautiful wild flowers and is rated as difficult. The trail is primarily used for hiking and running.

Distance: 13.8 miles Elevation Gain: 4,419 feet Route Type: Loop

hiking

running

views

wild flowers

wildlife

closed

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: https://www.parks.ca.gov/?page_id=30355 Bag Mt Olympia, North Peak, Mt Diablo, and Eagle Peak in Mt Diablo State Park on this beautiful loop.

hiking
blowdown
muddy
4 months ago

WOW!!!! 25km! definitely on the very high of my range!!! But was so amazing!!! Ok it was very cloudy, but still, the view was breathtaking! Met two persons on Diablo summit, and two on the way down from North Peak. That's it! Was super quiet! Few trees down here and there, nothing crazy. Super mudy at the bottom, but everything else was super fine. My longest hike ever. that simple... I loved it!!! Parked at Mitchell. It add few kilometers for sure, but removes all the stress about where to park, and it encourages the Park, so ni regrets. Also, they were VERY responsive to all the emails. Regarding my time, I went pretty fast, sometimes running on the way down, taking very few breaks. So your time might be a bit higher...

hiking
4 months ago

Great hike! The trail between north peak and mount Olympia was noticeably less travelled than all of the other portions of the hike. Foliage and branches encroaching on the trail, but it made it feel like you were in a far more remote location than the rest of the hike. Loves the whole thing. Definitely sore the next day. Also, like others have said, having a physical map on-hand was essential! So many spurs and intersections that I would have been lost without it. 6 bucks at the welcome center in the parking lot.

hiking
4 months ago

Great hike! We parked at Mitchell Canyon and received very helpful trail descriptions from the friendly park host. The beginning of the hike from Mitchell Canyon includes a lot of trail intersections, so the park hosts advice and maps kept us on track. Definitely worth the $6. The trails to Mt Olympia and North Peak had a number of steep sections, but the views were great and it was very rewarding to get to each summit marker! Only saw a handful of people on the trails outside of a 1 mile radius of Mt. Diablo's summit. Great long day hike! Oh, also, our GPS recorded closer to 15.6 miles (not the 13 listed here).

hiking
over grown
rocky
6 months ago

Want a worthy Diablo hike? Do all the peaks! This has steep climbs and descents that may be full of loose material. Some low overgrowth and encroaching poison oak, plus a few skree fields the trail crosses, all leading to excellent views. Parking? Park on the Mountaire Pkwy side, not on Regency where space in the permit free zones is limited.

running
6 months ago

Big run in a breezy day. 29km, 1500 D+. Happy and achy afterwards.

hiking
6 months ago

Starts in a residential area, recently the residents created new rules so you're not allowed to park at the trailhead, I got a $45 ticket. The trails are well-maintained but are still slippery because of loose rock, be especially careful going from North Peak to Mount Olympia because of loose rocks, steep terrain, and tight switch backs. There is poison oak that is avoidable if you're careful. I packed 64 oz water (2 32 oz nalgenes) and had about 32 oz left when I reached Mount Diablo summit and was pleasantly surprised to discover a drinking fountain at the top on Mount Diablo Peak! Make sure to hold the button down for a while before the water will start flowing. The number of trails can make it tricky to stay on course, for example, I took bruce lee road too far, missing eagle peak trail on the first try, didn't realize I was off course until I got to back creek trail, and ended up backtracking. The trail gets five stars from me because it's long, steep, technical, and fun. I'm not sure where I'm going to park next time though.

hiking
6 months ago

Very challenging hike but the views are worth it! Bring lots of water and a snack and good hiking shoes

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5 months ago

recorded Recording - Dec 15, 9:10 AM

6 months ago

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