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Routes
Hiking trails & Routes
Los Angeles County
San Dimas

Bonelli Trail

Hard

6

hikers

Bonelli Trail

07:01

25.3km

460m

Hiking

Hike the difficult 15.7-mile Bonelli Trail loop around Puddingstone Reservoir, offering diverse terrain and views of the San Gabriel Mountai

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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8.83 km

Beach

Beach

2

9.97 km

Puddingstone Dam

Highlight • Monument

You can cycle across the top of the dam, which was constructed in 1928 to help control flooding in the region. It stands at 147 feet high, and today supports a myriad of outdoor recreation activities on the reservoir.

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B

25.3 km

End point

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Way Types & Surfaces

Way Types

21.0 km

4.20 km

< 100 m

Surfaces

20.2 km

2.75 km

1.65 km

703 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 (250 m)

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Weather

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Today

Friday 22 May

26°C

14°C

0 %

Additional weather tips

Max wind speed: 22.0 km/h

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This route was planned by komoot.

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Frequently Asked Questions

What is the overall difficulty of the Bonelli Trail?

The full Komoot route for the Bonelli Trail is rated as difficult, primarily due to its length of over 25 kilometers. However, the trail offers varied terrain, with some sections around Puddingstone Reservoir being relatively easy, while others in the foothills involve steeper climbs. Hikers can choose shorter, less challenging segments if they prefer a moderate or easier experience.

How long does it typically take to hike the full route?

The complete Komoot route for the Bonelli Trail, which spans over 25 kilometers, typically takes around 7 hours to complete. This duration can vary based on your pace, stops for views, and the specific sections you choose to explore.

What kind of terrain can I expect on the trail?

The Bonelli Trail features a diverse landscape, including singletrack paths, wider fire roads, and some paved sections. You'll encounter rolling hills, shaded areas along a creek, and open stretches adorned with wild mustard. The trail offers continuous scenic views of Puddingstone Reservoir and vistas of the San Gabriel Mountains to the north.

Is the Bonelli Trail dog-friendly?

Yes, the Bonelli Trail is dog-friendly! You are welcome to bring your canine companions, but please ensure they are kept on a leash at all times to protect wildlife and ensure the safety of other trail users.

What are the parking options and trailhead access for the Bonelli Trail?

The Bonelli Trail is located within Frank G. Bonelli Regional Park. Parking is available at various points around Puddingstone Reservoir. A common starting point is near the Puddingstone Dam. Check the park's official website for specific parking lot locations and any potential fees.

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

Yes, Frank G. Bonelli Regional Park typically has an entrance fee for vehicles. It's advisable to check the official Los Angeles County Parks and Recreation website for the most current information on fees and operating hours before your visit. No specific hiking permits are generally required for the trail itself.

What is the best time of year to hike the Bonelli Trail?

The Bonelli Trail can be enjoyed year-round, but spring (March to May) is particularly pleasant when wildflowers like wild mustard are in bloom and temperatures are mild. Fall (September to November) also offers comfortable hiking conditions. Summers can be hot, so early morning or late afternoon hikes are recommended during those months.

What wildlife might I see along the route?

Keep an eye out for local wildlife, especially during quieter times like early mornings or evenings. You might spot desert cottontails scurrying through the brush and various waterfowl on or around Puddingstone Reservoir. The trail also passes under beautiful coast live oak trees.

Does the trail intersect with other paths?

Yes, the Komoot route for the Bonelli Trail primarily follows the 'Bonelli Trail' itself. However, it also incorporates sections of the 'Bonelli Park Long Loop' and the 'Lower Bee Hive Trail', offering a comprehensive experience of the park's trail network.

Is the Bonelli Trail suitable for families or beginners?

While the full Komoot route is rated difficult due to its length, the Bonelli Trail offers many sections that are suitable for families and beginners. The flatter, lake-level portions provide an easier walk with scenic views. You can choose to hike shorter segments to match your group's fitness level, making it a versatile option for various abilities.

What should I bring for a hike on this trail?

Given the trail's length and varied terrain, it's recommended to bring plenty of water, especially on warmer days. Comfortable hiking shoes are a must, and sun protection like a hat and sunscreen is advisable as some sections are exposed. Snacks, a map or GPS (like the komoot app), and a camera for the scenic views are also good additions.

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