nature trips


wild flowers


trail running

no dogs


kid friendly

mountain biking

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 spectacular. Many visitors to Mount Diablo head straight for the summit to enjoy the famous view. 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. 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. Gates open 8am and close at sunset. Visitors should plan to be in their vehicles by sunset and headed out to avoid being locked in.

Moderate hike!!!!! Love it.

Fun little ass kicker!

Nice moderate hike but the trail narrows quite a bit as you walk inside the canyon. Definitely on the treacherous side coming down, especially with all of the recent rains. A great place to hike after rain, as there are many waterfalls. No official parking, you just park on the street so get here early, especially during rainy season on weekends.

great hike, wide trail

Took Donner Loop, to Meridian Ridge, then looped back to Donner in about 4 hrs. With the recent storms, trails were very muddy, the waterfalls raging. There were so many beautiful areas to stop, contemplate, and appreciate. One of our favorite hikes.

Hiked Morning Jan 14. All open. Lots of water still. Muddy at bottom. Other hikers saw large patches of ladybugs. Also seemed quite busy, perhaps because of News posts about waterfalls. Great hike and will definitely come back to explore this area more. Can be bit of ass kicker for some.

such a lovely trail to be on... the soil is rich with history.

Muddy and slippery at this time of the year. Gusty wind and raining hard so make sure you guys have hiking boots with great tractions. Poles are great for incline. Worth it.

18 days ago

Definitely a good hike and workout to do during winters. I found the second half ( - after eagle peak )of the hike prettier than the first. Will definitely recommend hiking poles for the downhill. Very rocky and unstable. Fell down a bunch of times despite taking care.

It was a foggy day and we couldn't see much far away, but the nature we saw was beautiful. According to fitbit and myFitnessPall app the loop had at least 8 miles. Maybe the apps had wrong info-maybe the website. It seemed more than 6.3miles. But it took us 3 hours to go around. We had a normal, not fast or slow pace. I gave 5 stars to this trail. I am planning to do it again.