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Routes
Mountain biking trails
United States
California
Contra Costa County
San Ramon

Tassajara Ridge Trail Loop

Easy

2.9

(11)

42

riders

Tassajara Ridge Trail Loop

01:23

15.6km

290m

Mountain biking

This easy 9.7-mile mountain biking loop offers expansive views of Mount Diablo and rolling hills, especially vibrant in spring.

Last updated: February 26, 2026

Waypoints

A

Start point

Parking

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1

2.86 km

View from Hidden Valley Ridge

Highlight • Viewpoint

This small spur trail ends at an awesome viewpoint spanning across the valley.

Tip by

2

4.61 km

Tassajara Ridge Trail

Highlight (Segment) • Trail

The Tassajara Ridge Trail is a beautiful ride with rolling hills and overlooks boasting excellent views of San Ramon, Dublin, and Danville. Taking this route clockwise will give you longer, …

Tip by

3

9.75 km

Rolling Hills Trail

Highlight (Segment) • Trail

This multi-use trail skirts around the southern portion of San Ramon and is popular for walkers, runners, and cyclists, with views including Camp Parks, the valley's rolling hills and various …

Tip by

B

15.6 km

End point

Parking

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Way Types & Surfaces

Way Types

8.07 km

3.45 km

2.95 km

1.02 km

123 m

Surfaces

6.40 km

4.61 km

4.45 km

140 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 (310 m)

Lowest point (150 m)

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Weather

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Wednesday 6 May

24°C

10°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 Tassajara Ridge Trail Loop?

The Tassajara Ridge Trail Loop is conveniently accessed from the Hidden Valley Open Space. You'll find parking available at the trailhead there, making it easy to start your ride.

Is the Tassajara Ridge Trail Loop suitable for beginner mountain bikers?

Yes, the Tassajara Ridge Trail Loop is generally considered easy to moderate and suitable for a range of fitness levels, including beginners. While there are some steep climbs and descents, and sections can be bumpy, the 15.6 km loop from Hidden Valley Open Space is a great option for those new to mountain biking.

What kind of terrain will I encounter on the trail?

The trail primarily features doubletrack fire roads, along with dirt and gravel sections. You can expect some steep climbs and descents. Be aware that some parts of the fire road can be like cobblestones, and sections may be rutted and bumpy due to cow traffic, especially on downhills. There are also earthen sections with a mix of grass and gravel.

What are the main scenic highlights along the route?

You'll be treated to expansive views of Mount Diablo and the surrounding cities like San Ramon, Dublin, and Danville. Key highlights include the View from Hidden Valley Ridge. The trail also winds through picturesque rolling hills, especially vibrant in spring.

When is the best time of year to mountain bike the Tassajara Ridge Trail Loop?

The best time to experience the trail's vibrant green hills and wildflowers is during spring and early summer. The scenery is particularly picturesque when the hills are lush and adorned with blooms.

Are there any permits or fees required to use the Hidden Valley Open Space or the trail?

No, there are typically no permits or entrance fees required to access the Hidden Valley Open Space or to ride the Tassajara Ridge Trail Loop. It's a publicly accessible area.

Is the Tassajara Ridge Trail Loop dog-friendly?

While the trail is generally accessible, specific regulations regarding dogs (leash rules, waste disposal) within Hidden Valley Open Space should always be checked with local park authorities before your visit to ensure compliance.

How long does it typically take to mountain bike the Tassajara Ridge Trail Loop?

The Tassajara Ridge Trail Loop, which is about 15.6 kilometers (9.7 miles) long, typically takes around 1 hour and 23 minutes to complete by mountain bike, depending on your pace and stops.

Does the trail intersect with other paths, allowing for longer rides?

Yes, the route is part of a larger trail system. It incorporates sections of the Tassajara Ridge Trail and the Rolling Hills Trail. You'll also pass through parts of the Lower Hidden Valley Ridge Trail, Upper Hidden Valley Ridge Trail, Live Oak Trail, and Alamo Creek Trail, offering options for extending your ride.

What unique natural features or wildlife might I encounter?

A distinctive feature of this trail is the presence of grazing cattle, which you'll often see along the paths. While they contribute to the pastoral scenery, be aware that their presence can lead to cow pies and rougher, hoof-printed sections of the trail. In spring, wildflowers add to the natural beauty.

Are there any specific challenging sections or insider tips for riding this loop?

While generally easy, some sections feature tough climbs, and the trail can be very bumpy, especially for hardtail bikes. One memorable section is described as a "hairy hairpin turn on a rutted cow-trampled tread." For the best experience, consider riding in spring for lush green hills and wildflowers, and be prepared for potentially rougher terrain due to cattle.

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