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Routes
Road cycling routes
United States
California
Contra Costa County
Orinda

Lamorinda and Briones Loop

Hard

4.8

(1176)

15,938

riders

Lamorinda and Briones Loop

03:57

74.4km

1,360m

Road cycling

The Lamorinda and Briones Loop offers a challenging road cycling experience, blending the smooth, repurposed railway lines of the Lamorinda Trail with the demanding, hilly terrain of Briones Regional Park. You'll navigate a mix of paved roads and dedicated bikeways, encountering significant climbs and descents that lead to sweeping views of the East Bay hills, including Mount Diablo and Mount Tamalpais from higher points like Grizzly Peak Boulevard. The scenery transitions from urban fringes to open grasslands and oak woodlands, particularly lush and green from January to April.

This difficult 46.2-mile (74.4 km) route, with its 4463 feet (1360 metres) of elevation gain, typically takes around 3 hours and 57 minutes to complete. It's best suited for experienced cyclists seeking a substantial workout. Plan to carry ample water, especially on warmer days, and ensure your bike is ready for steep gradients. Parking is generally available in the communities near the start point, but arriving early on busy days is advisable.

What makes this route stand out is its unique combination of accessible urban trails and the rugged natural beauty of Briones Regional Park, offering a significant workout potential. The Lamorinda Trail system itself connects Lafayette, Moraga, and Orinda, providing a network of safer cycling options away from main roads for much of its length, before diving into the more demanding, scenic climbs of Briones.

Last updated: June 9, 2026

Waypoints

A

Start point

Bus stop

Get Directions

1

26.7 km

Rancho La Boca Summit - Alhambra Valley Road

Highlight • Summit

Highest point on Alhambra Valley Road, from here the road descends in both directions.

Tip by

2

44.8 km

El Toyonal - Loma Vista climb

Highlight (Segment) • Climb

Relentless climb up the eastern flank of the Orinda/Berkeley divide, but through a quiet residential area without traffic and with abundant shade from trees.

Tip by

3

49.3 km

Grizzly Peak Boulevard

Highlight (Segment) • Viewpoint

This road parallels the ridgeline above and have great views over the bay and surrounding hills.

Tip by

B

74.4 km

End point

Bus stop

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Way Types & Surfaces

Way Types

37.4 km

31.2 km

5.62 km

< 100 m

< 100 m

Surfaces

67.4 km

7.10 km

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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 (500 m)

Lowest point (70 m)

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Weather

Powered by Foreca

Wednesday 8 July

20°C

5°C

0 %

Additional weather tips

Max wind speed: 16.0 km/h

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Frequently Asked Questions

How difficult is the Lamorinda and Briones Loop for road cycling?

This is considered a difficult road cycling route. It covers approximately 74 kilometers (46 miles) with a significant elevation gain of about 1,360 meters (4,462 feet), requiring good fitness and experience with challenging climbs.

What kind of terrain can I expect on this road cycling loop?

The route primarily features paved roads, including dedicated bikeways and sections with marked cycling lanes. While the Lamorinda Trail Loop portion is entirely paved, the Briones Regional Park sections involve rolling hills and substantial elevation changes on mostly well-paved surfaces suitable for racebikes.

How long does it typically take to complete the Lamorinda and Briones Loop?

On average, completing this road cycling loop takes approximately 4 hours, 5 minutes. This duration can vary based on your cycling speed, fitness level, and any stops you make along the way.

What are the main highlights or viewpoints along the route?

You'll encounter several notable points of interest. These include the challenging Rancho La Boca Summit - Alhambra Valley Road and the El Toyonal - Loma Vista climb. For panoramic views, don't miss Grizzly Peak Boulevard, which offers expansive vistas.

Does the route intersect with other well-known trails?

Yes, the route incorporates sections of several other trails. You'll ride along parts of the Lamorinda Trail Loop, the Bay Area Ridge Trail - 02 - East Bay, the ADT - California - T - Seg 8, the Mokelumne Coast to Crest Trail, and the East Bay Skyline National Recreation Trail, among others.

Where can I park to access the Lamorinda and Briones Loop?

While the Komoot tour starts in Lafayette, Briones Regional Park has multiple entry points with parking. For specific trailhead parking, it's best to check the East Bay Regional Park District website for detailed information on parking lots and access points within Briones Regional Park that align with your starting preference.

What is the best time of year to cycle this loop?

The best seasons for cycling the Lamorinda and Briones Loop are typically spring and fall. During these times, the weather is generally mild, and the landscapes are vibrant. Summer can be hot, especially in exposed areas, while winter may bring rain and cooler temperatures.

Are dogs allowed on the Lamorinda and Briones Loop?

Within Briones Regional Park, dogs are generally permitted but must be kept on a leash in developed areas and under voice control in undeveloped areas. Always check specific signage and regulations for any sections of the route that pass through other jurisdictions or protected areas.

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

There are typically no entrance fees for Briones Regional Park itself. However, some specific activities or facilities within the park might require a fee or permit. For general cycling on the main routes, a permit is usually not required, but it's always good to check the East Bay Regional Park District's official website for the most current regulations.

Are there any cafes or places to refuel near the route?

Given that the route passes through and near communities like Lafayette, Orinda, and Moraga, you will find various cafes, restaurants, and stores where you can refuel and grab refreshments. It's a good idea to plan your stops in advance, especially for the longer stretches within Briones Regional Park.

What kind of views can I expect in Briones Regional Park?

Briones Regional Park offers stunning panoramic views, especially from higher elevations like the Briones Crest Trail. You can often see the Sacramento-San Joaquin River Delta, Mount Diablo, and Mount Tamalpais. The park features open grasslands with scattered oaks and blue oak woodlands, providing a diverse and scenic backdrop for your ride.

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