Bonelli Regional Park

San Dimas, California 91773

Bonelli Regional Park

Bonelli Regional Park Professional Guide

Detailed Trail Description from our Guidebook

"Girded by freeways and busy streets, the trails around Puddingstone Reservoir in Bonelli Regional Park are hardly the place to get away from it all—unless, perhaps, you arrive early on a Saturday or Sunday morning.

During those quiet times you can get a sense of how peaceful a spot this was before World War II. In those distant days, the reservoir nestled among serene hills overlooking a patchwork quilt of citrus groves."

More Bonelli Regional Park Professional Guides

Detailed Trail Descriptions from Our Guidebooks

Los Angeles County: A Day Hiker's Guide (The Trailmaster)
John McKinney
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"Considering that two of the park’s borders are the Foothill and San Bernardino Freeways, Bonelli offers more peace and solitude than one might expect. Fourteen miles of trail cross the park’s chaparral-covered hills and lead through quiet canyons shaded by oak and walnut groves. The Los Angeles Flood Control District built Puddingstone Dam in the San Jose Hills near San Dimas. Completed in 1928 for the purpose of capturing and storing rainwater and storm runoff, the dam created a 250-acre lake, which soon attracted swimmers and fishermen, and has remained a popular destination ever since. As the population of the San Gabriel Valley mushroomed during the 1950s and 1960s, the State Department of Parks and Recreation began purchasing land around the reservoir. Puddingstone Reservoir State Park as it was known, remained a little-developed, low-key place until 1970, when the property was transferred to Los Angeles County." Read more
Afoot and Afield: Inland Empire (Wilderness Press)
David & Jennifer Money Harris
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"Frank G. Bonelli Regional Park covers nearly 2000 acres in the hills at the western end of the Inland Empire. It features 250-acre Puddingstone Reservoir and countless amenities such as boat rentals, picnic areas, playgrounds, golfing, hot tubs, the Raging Waters theme park, and even a wedding chapel! Hikers will find a paved trail around the lake (described in this trip) and a network of trails in the hills (shown on the map). The Park is open sunrise–7 p.m. from Nov. to Feb., and sunrise–10 p.m. from March to October." Read more

Bonelli Regional Park Reviews

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I went on a Saturday in January at about 2pm and was surprised how quiet it was considering how nice the weather was. I took my car and parked in their car park, it was $10 to park which was high considering what you get when you get past the gates. There are lots of picnic tables and shaded areas, lots of barbecues and public toilets right next to the car park, so it would be a nice place to come for a picnic with the family. There is also quite a lot of open grass area with a couple of baseball fields too (nothing fancy however!). I imagine it gets very busy at peak times/seasons which probably wouldn’t be as fun! I went looking for the trail but was disappointed by it. Some of it is paved when you are walking alongside the water, and you never really get the feeling you are on a ‘hike’. This is more like a place to go and hang out with the family one afternoon, not for the serious hiker. Personally I like to hike away from lots of other people and like to get away from civilization for a while. This is definitely not the place for anyone who likes to do the same! There is a separate parking lot for people with boats, and lots of places to launch a boat from if you bring one. Of course you have to pay to do this though! You can also pay to rent bikes, boats, jet skis and fishing gear. Please feel free to email me with any questions you have about the walk. My email is
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This is very kept facility. Great for family picnic. Also great for bikers and hikers. You can rent paddle boat, fishing pole, bike, etc when you get there. $8 to enter the park unless you park outside the park gate and ride your bike in.
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Nice trails. good for training hikes. Will use again.

Trail Information

San Dimas
Nearby City
Trail Type
Skill Level
3.5 hours
Local Contacts
USGS 7.5-min San Dimas
Local Maps

Activity Feed

Dec 2018