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Routes
Mountain biking trails
United States
California
Contra Costa County
Walnut Creek

Briones to Mt. Diablo Trail Loop

Easy

3.0

(30)

61

riders

Briones to Mt. Diablo Trail Loop

00:37

5.84km

150m

Mountain biking

This easy 3.6-mile mountain biking loop in Shell Ridge Open Space offers 488 feet of elevation gain and scenic views.

Last updated: February 26, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Diablo Foothills Regional Park

Waypoints

A

Start point

Get Directions

1

2.12 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

2

2.49 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

3.09 km

Briones to Mount Diablo Regional Trail

Highlight (Segment) • Trail

Gravel at its best. This road is a paradise for gravel bikers and novices on a mountain bike.

Tip by

B

5.84 km

End point

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Way Types & Surfaces

Way Types

5.84 km

Surfaces

4.08 km

1.76 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 7 May

27°C

11°C

-- %

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This route was planned by komoot.

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Frequently Asked Questions

Where can I park to access the Briones to Mt. Diablo Trail Loop?

The Briones to Mt. Diablo Trail Loop can be accessed from various points. A common starting point is near Borges Ranch, which offers parking. Given the trail's connectivity, you can also find parking at other regional parks it traverses, such as Briones Regional Park or Diablo Foothills Regional Park.

Is the Briones to Mt. Diablo Trail Loop dog-friendly?

Yes, dogs are generally allowed on the trails within Briones Regional Park and Mt. Diablo State Park, which this route connects. However, specific leash rules and restrictions may apply in certain areas or on particular trails. Always check local signage and park regulations before you go.

What is the best time of year to mountain bike the Briones to Mt. Diablo Trail Loop?

The spring is often considered the best time to ride this trail. The hills are vibrant green, wildflowers are abundant, and the weather is typically mild. Fall also offers pleasant riding conditions. Summers can be very hot, and some sections can become muddy and rutted after heavy winter rains, making them challenging.

Are there any permits or fees required to ride the Briones to Mt. Diablo Trail Loop?

Generally, there are no specific permits required for mountain biking on the Briones to Mt. Diablo Trail itself. However, some regional parks it connects, like Briones Regional Park or Mt. Diablo State Park, may have day-use fees or parking fees. It's always a good idea to check the specific park's website for the latest information before your visit.

What kind of terrain can I expect on the Briones to Mt. Diablo Trail Loop?

The terrain is highly diverse. You'll encounter well-used fire roads, some of which can be smooth, while others might be rocky or rutted, especially after rain. There are also paved paths and community sidewalks in urban sections, and designated singletrack trails. Within Briones, expect fire roads with steep climbs, and on Mt. Diablo, trails range from gradual fire roads to technical, loose, and rocky sections.

What are the notable viewpoints or natural features along the route?

The route offers expansive views of Mt. Diablo, Las Trampas, and Pine Canyon. You'll pass by natural features like Twin Ponds and ride along the scenic Briones to Mount Diablo Regional Trail. From higher points, you can often see across Suisun Bay towards the Delta or into the San Ramon Valley. Keep an eye out for local wildlife and diverse bird species.

Does the trail intersect other well-known paths?

Yes, the route is a significant connector and intersects with many other trails. You'll find sections that are part of the ADT - California - T - Seg 7, Diablo Regional Trail, and Mokelumne Coast to Crest Trail. It also crosses paths with local trails like Borges Ranch Trail, Coyote Pond Trail, Stonegate Trail, Twin Ponds Loop Trail, Foothills Trail, Fairy Lantern Trail, Buckeye Ravine Trail, Shell Ridge Trail, Sugarloaf-Shell Ridge Trail, Ridge Top Trail, and Indian Creek Trail.

Is the Briones to Mt. Diablo Trail Loop suitable for beginners?

While the specific loop described is rated 'easy' for mountain biking, the broader Briones to Mt. Diablo Trail corridor offers a range of difficulties. Some sections are suitable for beginners looking to improve skills on moderate hills, but be aware that the area is known for steep climbs on fire roads, with grades up to 25% in places. Beginners should research specific sections to ensure they match their skill level.

What are the regulations for mountain biking in Shell Ridge Open Space?

Shell Ridge Open Space is part of the network connected by this trail. Generally, mountain biking is permitted on designated trails. Always stay on marked trails, respect wildlife, and yield to hikers and equestrians. There are typically no entrance fees, but specific rules regarding dogs (leash laws), hours of operation, and fire restrictions should be observed. Check the East Bay Regional Park District website for the most current regulations.

Are there opportunities to create longer or more challenging rides from this loop?

Absolutely. The Briones to Mt. Diablo Trail is primarily a connecting corridor. Many riders use it as a base to create custom, longer, and more challenging loops by linking with other trails within Briones Regional Park and Mt. Diablo State Park. You can combine sections with routes like Wall Point Road or explore trails within Shell Ridge Open Space for extended adventures.

Are there any cafes or amenities near the trailheads?

Given that the trail passes through and connects various regional parks and open spaces, you'll find amenities in nearby towns. Walnut Creek, for example, is a larger city close to several access points and offers a wide range of cafes, restaurants, and other services. Smaller communities around the parks may also have local establishments.

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