The Dumbarton Bridge is the shortest and southernmost bridge across the San Francisco Bay. At 1.6 miles you can cross the water with nice views over the bay. Just keep an eye out for potholes, especially on the east side, as the road conditions aren't the best. That being said there was ongoing road works the last time I was in the area so hopefully things are improving.

🕊️ 𝑻𝒓𝒂𝒗𝒆𝒍𝒆𝒓

October 13, 2020

Road cycling

Safely separated dedicated bike trail across the bay, between Hayward and Mountain View

John Doe

February 20, 2023

Road cycling

It's nice there's a way to ride across the bay, but it's really miserable. You're inches from a freeway (it's really loud). It's always cold and windy on the bridge and on the road on the east side of the bridge. The road surface on the east side of the bridge is in extremely poor condition as well.

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Best routes to Dumbarton Bridge

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1. San Francisco Bay & Dumbarton Bridge loop from Bayshore

59.5km

02:38

50m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Moderate

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2. Fremont BART to Palo Alto loop — Fremont

64.1km

02:38

80m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Moderate

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3. South Bay loop via SF Bay Trail — Hayward

74.5km

03:00

130m

Moderate road ride. Good fitness required. Mostly well-paved surfaces and easy to ride.

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Moderate

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Distance 810 m

Weather

Today

Sunday 8 February

17°C

8°C

0 %

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Max wind speed: 12.0 km/h

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Location: Menlo Park, San Mateo County, California, United States

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Dumbarton Bridge

1. San Francisco Bay & Dumbarton Bridge loop from Bayshore

2. Fremont BART to Palo Alto loop — Fremont

3. South Bay loop via SF Bay Trail — Hayward

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