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Hiking trails & Routes
United States
California
Contra Costa County
Alamo

Stonegate Loop

Easy

4.5

(9673)

17,370

hikers

Stonegate Loop

01:39

5.82km

140m

Hiking

The Stonegate Loop is an easy 3.6-mile hike in Diablo Foothills Regional Park, offering natural scenery and wildlife viewing.

Last updated: February 26, 2026

Waypoints

A

Start point

Get Directions

1

380 m

Swamp – drinking water for wildlife

Highlight • Natural

Try to visit early morning

Tip by

2

2.11 km

At this intersection you either decide to continue on Borges Ranch Trail or on Foothills Trail – both are great gravel roads.

Tip by

3

2.91 km

Diablo Foothills Regional Park is a 1,060 acres area in California. You can enjoy its panoramic views as you joyfully cycle through the multiple trails that allow access to the …

Tip by

4

4.05 km

Twin Ponds

Highlight • Lake

Two small ponds, mostly dry by summer, at the junction with Borges Ranch Trail. They fill again with the winter rains and last through spring and early summer. They are dry in late summer and fall.

Tip by

B

5.82 km

End point

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Way Types & Surfaces

Way Types

5.82 km

Surfaces

4.58 km

1.20 km

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Elevation

Elevation

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

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Weather

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Thursday 25 June

25°C

13°C

0 %

Additional weather tips

Max wind speed: 19.0 km/h

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Frequently Asked Questions

How long does it take to hike the Stonegate Loop?

The Stonegate Loop is an easy hike, approximately 5.8 kilometers (3.6 miles) long. Most hikers can complete it in about 1 hour and 40 minutes, depending on their pace and how often they stop to enjoy the scenery.

What is the difficulty and terrain like on this trail?

This is considered an easy hike, suitable for most fitness levels. The terrain is generally well-maintained, typical of trails within Diablo Foothills Regional Park. You'll encounter a mix of winding paths and natural surfaces, with a moderate elevation gain of about 137 meters (450 feet).

Are dogs allowed on the Stonegate Loop?

Yes, dogs are generally welcome on trails within Diablo Foothills Regional Park, including the Stonegate Loop. However, they must be kept on a leash at all times to protect wildlife and ensure a pleasant experience for all visitors.

What are the parking options and trailhead access for the Stonegate Loop?

The Stonegate Loop is located within Diablo Foothills Regional Park. Specific parking information for the trailhead can usually be found on the park's official website or signage upon arrival. It's advisable to check for designated parking areas near the start of the loop.

Do I need a permit or pay an entrance fee for Diablo Foothills Regional Park?

Diablo Foothills Regional Park may have entrance fees or specific permit requirements, especially for certain activities or group sizes. It's best to check the official East Bay Regional Park District website for the most current information regarding fees and regulations before your visit.

What can I see along the route?

The loop offers a variety of natural features. You'll pass by a Swamp – drinking water for wildlife, a Winding Path in Diablo Foothills Regional Park, and the scenic Twin Ponds. The trail also includes a Foothills Trail and Borges Ranch Trail junction.

What is the best time of year to hike the Stonegate Loop?

The Stonegate Loop can be enjoyed year-round. Spring brings wildflowers and lush greenery, while autumn offers pleasant temperatures and changing foliage. Summers can be warm, so an early morning or late afternoon hike is recommended. Winters are generally mild, but check weather conditions for rain.

Is the Stonegate Loop suitable for families with children?

Given its 'easy' difficulty rating and moderate length, the Stonegate Loop is generally considered family-friendly. The varied scenery and natural points of interest can make it an engaging experience for children, provided they are comfortable with the distance.

Does the trail intersect other well-known paths?

Yes, the route also passes through sections of the Briones to Mt. Diablo Regional Trail, the Diablo Regional Trail, the ADT - California - T - Seg 7, the Mokelumne Coast to Crest Trail, and the Foothills Trail.

What kind of wildlife might I spot on the Stonegate Loop?

As the trail winds through Diablo Foothills Regional Park, you have a good chance of spotting local wildlife. Keep an eye out for various bird species, small mammals like squirrels and rabbits, and potentially deer, especially during quieter times of the day.

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