Carquinez Strait loop
Carquinez Strait loop
4.8
(9790)
16,597
riders
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
Start point
Parking
Get Directions
4.43 km
Highlight • Natural Monument
Tip by
12.8 km
Highlight (Segment) • Cycleway
Tip by
23.4 km
Highlight (Segment) • Bridge
Tip by
40.6 km
Highlight (Segment) • Cycleway
Tip by
56.7 km
End point
Parking
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
Highest point (100 m)
Lowest point (0 m)
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Weather
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Today
Thursday 2 July
26°C
13°C
0 %
Additional weather tips
Max wind speed: 19.0 km/h
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This route was planned by komoot.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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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