Rock City to the Summit of Mount Diablo

MODERATE 55 reviews
#5 of 25 trails in

Rock City to the Summit of Mount Diablo is a 7.8 mile moderately trafficked out and back trail located near Danville, California that features beautiful wild flowers and is rated as moderate. The trail offers a number of activity options and is accessible year-round.

7.8 miles 2299 feet Out & Back

birding

camping

hiking

mountain biking

nature trips

rock climbing

trail running

walking

forest

views

wild flowers

wildlife

rocky

From Rock City hike up to the summit. This trial offers scenic views and breathtaking climbs. Although steep in sections, it is a great hike. This park is one of the ecological treasures of the San Francisco Bay Area. 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 elevation, 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 converge to form the twisting waterways of the Delta. To the east beyond Califomia's great central valley, the crest of the Sierra Nevada seems to float in space.

hiking
18 days ago

One word: amazing! Took the Pittsburg trail up to the red rocky summit with a beautiful overlook. I am always near Mount Diablo and I will do this hike again.

hiking
23 days ago

hiking
25 days ago

Rock city is awesome!!! Big rocks to climb everywhere! The hike up to the summit is a little hard but worth it when you get to the top. 360• view of the Bay Area

26 days ago

hiking
1 month ago

Rock City to Summit via Summit Trail. Hiked this with my 17-year-old son. It was great bonding time, and he was very patient with me. The trail is well maintained, which is nice. However, the trek up was tough for me. It took 3.5 hours to the Summit and 2 hours back down. I would rate it moderate plus some. There are virtually no switchbacks, so you are hiking uphill, albeit gradually, the entire way. Informational signs and center at top were interesting. Plenty of opportunity for bathrooms but no potable water sources between Rock City and the Summit, so come prepared and fill up when you can.

hiking
1 month ago

This was a challenging hike from the sandstone formations of Rock City up to the summit of Mount Diablo. This 9.5-mile double lollipop loop hike took 5 hours to complete. Much of the Rock City trail, Summit trail and Juniper trail are along the “Trail Through Time” with its interpretive signs describing 190 million years of geological history. At Rock City we hiked amongst the Wind Caves and climbed up Sentinel Rock before proceeding up the Summit trail. The summit is at 3,848 feet. When we were up there we had rain and it turned into snow. We returned on the Juniper trail passing Juniper Camp and back to the Summit trail.

1 month ago

hiking
1 month ago

1 month ago

Awesome.. great views at several points throughout, but the trek itself provides great memories should you go the entire way to the summit,

1 month ago

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backpacking
3 months ago

3 months ago

Great trail however the trailhead and starting point are not clear. Read above comments for best directions.

Plan more time than expected. I accidentally ended up hiking a portion of the trail in the dark. I was prepared with a headlamp however because of the nature of the trailhead not being clear it could be easy to get turned around. Near rock city there is a huge network of social trails, just be aware and take a gps point of where you parked your car.

Incredible views and beautiful around to rock city!! Great diversity of ecosystems and terrain. Awesome summit.

4 months ago

Great hike. Glad we found it on this great Ap.

5 months ago

Get hot not much shade, if any. Drink lots of water. Had a picnic on the return. And loved every moment.