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Routes
Bike touring routes & trails
United States
California
Contra Costa County
Martinez

Carquinez Strait loop

Hard

4.8

(9790)

16,597

riders

Carquinez Strait loop

03:38

56.7km

620m

Cycling

Embark on the Carquinez Strait loop, a challenging touring bicycle route that spans 35.2 miles (56.7 km) and includes a significant 2019 feet (615 metres) of elevation gain. This ride, estimated to take around 3 hours and 37 minutes, offers a dynamic experience as you cycle through rolling hills, past oak woodlands, and across open grasslands. You will enjoy expansive views of the strait, with Mt. Diablo often visible in the distance, and the impressive Carquinez Bridge providing a memorable landmark. Keep an eye out for sailboats on the water and active trains along the shore as you navigate this difficult route. The diverse terrain and constant changes in scenery make this a rewarding journey for experienced riders.

Planning your ride on the Carquinez Strait loop requires some preparation, as sections of the route feature narrow or absent shoulders on roadways and can involve busy streets. This makes the trail best suited for experienced cyclists who are comfortable with these conditions. You can begin your adventure from various parking areas located along the route, offering flexibility for your starting point. As you cycle, you will find opportunities to pause for refreshments in the charming downtown areas of the historic communities you pass through.

The Carquinez Strait loop is notable for its unique geographical position where the San Francisco Bay converges with the Sacramento-San Joaquin River Delta. This confluence creates a rich natural environment that blends waterfront industrial activity with serene natural beauty. The route also takes you through several historic communities, allowing you to experience a mix of natural landscapes and urban exploration. This combination of challenging cycling, diverse scenery, and cultural insights makes the Carquinez Strait loop a distinctive option for your next touring bicycle adventure.

Last updated: April 23, 2026

Tips

Your route passes through a protected area

Please check local regulations for:

Carquinez Regional Shoreline

Waypoints

A

Start point

Parking

Get Directions

1

4.43 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 historic home, this park honors the great early conservationist and founder of the Sierra Club.

Tip by

2

12.8 km

George Miller Regional Bike Trail

Highlight (Segment) • Cycleway

Carquinez Scenic Drive is closed to cars since landslides caused damage in the 1980s. The former road is a paved park trail in the Carquinez Regional Shoreline Reserve to the east, and a rebuilt excellent paved bike path to the west of the oil dock.

Tip by

3

23.4 km

Carquinez Bridge

Highlight (Segment) • Bridge

This stretch of the trail crosses the Carquinez Bridge, where a dedicated bike path runs alongside the road. From here, you can enjoy stunning views of the bay, with San Pablo Bay on one side and the Carquinez Strait on the other.

Tip by

4

40.6 km

Benicia-Martinez Bridge Bike Trail

Highlight (Segment) • Cycleway

A dedicated bike path runs adjacent to the road, crossing the bridge over the Carquinez Strait at the mouth of Suisun Bay. This is a stunning stretch of trail.

Tip by

B

56.7 km

End point

Parking

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Way Types & Surfaces

Way Types

26.7 km

23.1 km

6.88 km

< 100 m

< 100 m

Surfaces

37.0 km

17.8 km

1.65 km

337 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 (100 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Today

Thursday 2 July

26°C

13°C

0 %

Additional weather tips

Max wind speed: 19.0 km/h

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Comments

May 11, 2024,Carqninez Strait Mixed Bridge to Bridge Ride
Just want to say that this is a great mixed surface ride for anyone. There is a lot of significance in history here. The scenery is great. The climate is usually okay.
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Frequently Asked Questions

What is the overall difficulty of the Carquinez Strait loop for touring cyclists?

The Carquinez Strait loop is generally considered difficult for touring cyclists, especially the full 50-mile route or the 24-mile "Bridge-to-Bridge Loop." It features significant climbs and sections with less defined cycling infrastructure, making it best suited for experienced riders. However, some segments, like the George Miller Regional Bike Trail, are easier and more family-friendly.

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

The terrain on the Carquinez Strait loop is quite varied. You'll encounter rolling hills and sustained climbs, particularly along ridgelines. The route includes both paved and unpaved surfaces, with some sections on mixed roads and pathways. Be prepared for some areas with narrow or no shoulders and potentially busy streets. For example, the George Miller Regional Bike Trail is paved, while other parts might be compacted dirt or rough roads.

What are the main scenic highlights and viewpoints along the Carquinez Strait loop?

The route offers stunning and diverse views. You'll see the Carquinez Strait where the San Francisco Bay meets the Sacramento-San Joaquin River Delta, Mt. Diablo, and the working waterfront. Key highlights include crossing the Carquinez Bridge and the Benicia-Martinez Bridge Bike Trail, both offering spectacular water views. You'll also pass through oak woodlands, open grasslands, and historic communities, with views extending to Mt. Tamalpais on clear days.

Does the Carquinez Strait loop connect with other well-known trails?

Yes, the Carquinez Strait loop is part of a larger network. It intersects with significant portions of the San Francisco Bay Trail and the Bay Area Ridge Trail (both North Bay and East Bay segments). You'll also find sections that overlap with the Contra Costa Canal Trail, Mokelumne Coast to Crest Trail, and the Solano Bikeway, among others.

Where can I park to access the Carquinez Strait loop, and are there public transport options?

You can start the loop from various parking areas in the historic communities along the route, such as Benicia, Martinez, Crockett, or Port Costa. The trail research mentions that the loop allows riders to start at various parking areas. While specific public transport details aren't provided, the route passes through several towns, which may offer connections to local transit.

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

The trail is enjoyable for cycling throughout much of the year. Spring and fall generally offer pleasant temperatures and clear skies, making them ideal. Summer can be warm, but sections along the Benicia waterfront provide cooling breezes. Winter can bring rain, but many days are still suitable for riding.

Are dogs allowed on the Carquinez Strait loop?

The Carquinez Strait loop traverses various parks and trails, each with its own regulations. While some sections, particularly multi-use paths, may be dog-friendly, it's best to check the specific rules for each segment you plan to ride, especially within the Carquinez Strait Regional Shoreline or other regional parks, as leash laws and access restrictions can vary.

Do I need a permit or is there an entrance fee for the Carquinez Strait Regional Shoreline or the loop itself?

Generally, there are no specific permits required or entrance fees for cycling the Carquinez Strait loop itself, as it utilizes public roads and various trail segments. However, if you plan to access specific facilities or parking lots within the Carquinez Strait Regional Shoreline or other regional parks along the route, there might be parking fees or specific regulations to be aware of. Always check with the relevant park authority for the most current information.

Are there places to stop for food and refreshments along the route?

Yes, the loop passes through several historic communities and bustling downtown areas. You'll find opportunities to stop for refreshments and meals in quaint downtowns along the route, making it convenient to refuel during your ride.

Is the Carquinez Strait loop suitable for families or beginner cyclists?

While the full Carquinez Strait loop is rated as difficult and recommended for experienced cyclists, there are specific segments that are more suitable for families and beginners. Sections like the Benicia - Vallejo Waterfront trail and the George Miller Regional Bike Trail are considered easy, featuring mostly level, paved paths. It's advisable to research specific segments if you're looking for an easier ride.

What makes the Carquinez Strait loop a notable cycling experience?

This loop is notable for its unique blend of scenic beauty and diverse environments. It offers continuous views of the Carquinez Strait, bridges, and surrounding landscapes, including the convergence of the San Francisco Bay and Sacramento-San Joaquin River Delta. A key feature is the ability to cross both the Benicia-Martinez Bridge Bike Trail and the Carquinez Bridge on separated bike lanes, providing spectacular views. It also connects to over 10,000 acres of parks and open spaces and passes through five historic communities.

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