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Hiking trails & Routes
Los Angeles County
San Dimas

Bonelli Trail Loop

Moderate

9

hikers

Bonelli Trail Loop

03:06

11.4km

160m

Hiking

Hike the 7.1-mile Bonelli Trail Loop around Puddingstone Reservoir in Frank G. Bonelli Regional Park, a moderate route with water views.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

11.1 km

View of Puddingstone Reservoir

Highlight • Lake

This reservoir plays several roles, such as providing water for agriculture, but also serving as a basin where you can swim, fish, and even sail.

Tip by

B

11.4 km

End point

Parking

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Way Types & Surfaces

Way Types

10.6 km

573 m

192 m

< 100 m

Surfaces

4.61 km

4.25 km

2.41 km

< 100 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (360 m)

Lowest point (290 m)

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Weather

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Today

Sunday 5 July

31°C

18°C

0 %

Additional weather tips

Max wind speed: 21.0 km/h

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Frequently Asked Questions

Where can I park to access the Bonelli Trail Loop?

The Bonelli Trail Loop is located within Frank G. Bonelli Regional Park in San Dimas, California. There are multiple parking areas throughout the park that provide access to the trail. Specific trailhead parking can vary, but generally, you'll find ample parking within the regional park itself.

Is the Bonelli Trail Loop dog-friendly?

Yes, dogs are permitted on the Bonelli Trail Loop, but they must be kept on a leash at all times. It's a popular spot for dog walkers, so you'll likely see other furry friends enjoying the route.

What's the best time of year to hike this trail?

The Bonelli Trail Loop is enjoyable year-round, but spring and fall offer the most pleasant temperatures for hiking. In spring, you might see wild mustard in bloom. Early mornings or late afternoons are ideal to avoid the midday heat, especially in summer, and to potentially spot wildlife like desert cottontails and waterfowl.

Are there any permits or entrance fees required for Frank G. Bonelli Regional Park?

Frank G. Bonelli Regional Park may have entrance fees, especially for vehicle entry. For the most current information on fees and any specific regulations, it's best to check the official Los Angeles County Parks and Recreation website: lacounty.gov.

Is this trail suitable for beginners or families?

Yes, the Bonelli Trail Loop is generally considered easy to moderate and is very family-friendly. Its minimal elevation gain and diverse terrain make it accessible for various activity levels, including beginners and children. It's a great option for an enjoyable outing with the whole family.

What kind of terrain and views can I expect on the loop?

The loop offers a diverse experience with a mix of singletrack paths, fire roads, and asphalt sections. You'll traverse rolling hills, pass through shaded areas along a creek, and walk under coast live oak trees. The predominant feature is the continuous view of the 250-acre Puddingstone Reservoir, which the trail encircles. You can also enjoy vistas of the San Gabriel Mountains to the north and find 'exceptional views' from surrounding foothills.

What are the main points of interest along the route?

The primary point of interest is the View of Puddingstone Reservoir, which you'll have continuous sight of throughout the loop. Beyond the reservoir, you'll encounter numerous picnic areas, shaded sections along a creek, and elevated points offering great views of the surrounding landscape and the San Gabriel Mountains.

Can I bike or horseback ride on this trail?

Yes, the Bonelli Trail Loop is a popular multi-use trail. It's shared by hikers, mountain bikers, trail runners, and horseback riders. This versatility makes it a great option for various outdoor activities within Frank G. Bonelli Regional Park.

What kind of wildlife might I see?

Along the trail, especially during quieter times like early morning or evening, you might spot desert cottontails. The Puddingstone Reservoir also attracts various waterfowl, making it a good spot for birdwatching.

Does the route connect with other trails in the park?

Yes, the Bonelli Trail Loop intersects with and incorporates sections of several other official trails within Frank G. Bonelli Regional Park. These include segments of the Bonelli Trail, Bonelli Park Long Loop, Tree Line Trail, Park View Trail, Kikos Trail, Lower Bee Hive Trail, Vargus Trail, and Lake View Trail.

Are there any tips for making the most of a visit to the Bonelli Trail Loop?

To fully enjoy your visit, consider going during off-peak hours to avoid crowds, especially if you're looking for a more serene experience. Bringing plenty of water is always a good idea, and don't forget your camera for the continuous views of Puddingstone Reservoir and the San Gabriel Mountains. The park also offers boat and bike rentals if you wish to extend your activities beyond hiking.

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