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Routes
Road cycling routes
United States
California
Contra Costa County
Martinez

Carquinez Strait loop

Hard

3.1

(9)

97

riders

Carquinez Strait loop

04:22

88.3km

1,170m

Road cycling

Embark on the Carquinez Strait loop, a difficult road cycling route spanning 54.9 miles (88.3 km) with a significant 3831 feet (1168 metres) of elevation gain. This challenging ride, estimated to take 4 hours and 22 minutes, offers a dynamic landscape as you cycle along the Carquinez Strait. You will…

Last updated: April 23, 2026

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The surface for a segment of your route may not be suitable

Some segments of your route comprise a surface that may not be suitable for your chosen sport.

After 58.9 km for 1.65 km

Waypoints

A

Start point

Parking

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1

1.61 km

Carquinez Scenic Drive through

Highlight (Segment) • Cycleway

Great paved bike trail through a shaded area with several great viewpoints across the bay.

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2

4.69 km

Carquinez Scenic Drive

Highlight (Segment) • Cycleway

Fantastic winding paved road with spectacular views that's mostly reserved for bikes.

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3

28.5 km

John Muir Memorial Park

Highlight • Natural Monument

At the foot of Mount Wanda and Mount Helen, a statue of John Muir stands surrounded by a young but already tall redwoods grove. Just a mile south from his …

Tip by

4

36.0 km

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

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5

50.1 km

Pinole Creek Bike Bridge

Highlight • Bridge

Rebuilt bridge connection on the Bay Trail between the towns of Pinole and Hercules.

Tip by

6

58.9 km

Alfred Zampa Memorial Bridge

Highlight • Bridge

This beautiful bridge with a separate bike path that has great views of the Carquinez Strait.

Tip by

7

84.1 km

Benicia-Martinez Bridge

Highlight • Bridge

Nice bridge with a separate bike path and great views of the Carquinez Strait. A good sunset spot!

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B

88.3 km

End point

Parking

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Way Types & Surfaces

Way Types

58.3 km

23.6 km

3.52 km

2.83 km

113 m

Surfaces

75.4 km

11.3 km

1.53 km

130 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 (250 m)

Lowest point (0 m)

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Weather

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Today

Friday 8 May

25°C

10°C

0 %

Additional weather tips

Max wind speed: 18.0 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 Carquinez Strait loop?

This loop is generally considered a challenging road ride, requiring good to very good fitness. It involves significant elevation gains, potentially exceeding 3,000 feet, and can take over five hours to complete. While many sections are well-paved, some longer routes might include unpaved or difficult segments.

What kind of terrain can I expect on this cycling route?

The route offers a diverse cycling experience. You'll find well-paved sections, including the wide, paved Carquinez Scenic Drive and the George Miller Regional Trail, which features gentle undulations. Other parts involve rolling terrain and climbs, and within Martinez, you might ride with boulevard traffic, often with dedicated bike lanes. Some longer variations can include unpaved sections.

What are the main viewpoints and landmarks along the Carquinez Strait loop?

Cyclists are treated to fantastic views of the Carquinez Strait, Benicia, and the surrounding Franklin Hills. Key landmarks include crossing the Alfred Zampa Memorial Bridge and the Benicia-Martinez Bridge. You'll also pass by the John Muir Memorial Park, the Rancho La Boca Summit, and the Pinole Creek Bike Bridge. The scenery includes working waterfronts, distant views of Mt. Diablo, grasslands, oak woodlands, and active railroad lines.

Where can I park to access the Carquinez Strait loop?

Parking options are available in Martinez, which serves as a common starting point for the loop. Specific parking areas can vary, but look for public parking lots or street parking in the downtown Martinez area or near access points to the George Miller Regional Trail.

Does the route intersect with other well-known trails?

Yes, the route integrates portions of several other trails. Notably, it includes sections of the San Francisco Bay Trail and the George Miller Regional Trail, which offers car-free cycling with excellent water views. Other trails that intersect or run concurrently for short segments include the Bay Area Ridge Trail - 02 - East Bay and the Mokelumne Coast to Crest Trail.

Are there any permits or fees required to cycle this loop?

Generally, there are no specific permits or fees required to cycle the public roads and trails that make up the Carquinez Strait loop. However, always check for any updated regulations, especially if you plan to access specific parks or facilities within the Carquinez Strait Regional Shoreline, which might have their own rules or parking fees.

Is the Carquinez Strait loop dog-friendly?

As this is primarily a road cycling route, it is generally not suitable for dogs, especially on the main road sections. While some park areas along the route may allow leashed dogs, the overall loop is designed for cyclists and does not offer dog-friendly amenities or safe conditions for pets.

What is the best time of year to cycle the Carquinez Strait loop?

The best time to cycle this loop is typically during the spring and fall months when temperatures are moderate and the weather is generally clear. Summer can be warm, especially inland, while winter may bring rain and cooler temperatures. Always check the local forecast before heading out.

Are there cafes or places to refuel along the route?

Yes, as the loop connects several historic communities, including Martinez, you'll find opportunities for cafes, restaurants, and shops to refuel and rest. Martinez's historic downtown, in particular, offers various options for food and drinks.

Is this a loop trail or an out-and-back?

The Carquinez Strait loop is, as its name suggests, a loop trail. This means you will generally start and end at the same point, without needing to retrace your steps.

What is a good strategy for tackling the elevation on this challenging ride?

Given the significant elevation gains, a good strategy is to pace yourself, especially on the longer climbs. Many experienced riders suggest starting early to avoid warmer afternoon temperatures and potential headwinds. Utilizing the George Miller Regional Trail section can offer a more moderate start or finish to your ride, allowing you to conserve energy for the more challenging climbs.

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