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Natural Monuments

United States
California
Marin County

Estero de San Antonio

Discover
Places to see

Natural Monuments

United States
California
Marin County

Estero de San Antonio

Highlight • River

Estero de San Antonio

Recommended by 2 cyclists

This Highlight is in a protected area

Please check local regulations for: Greater Farallones National Marine Sanctuary

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    Top cycling routes to Estero de San Antonio

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    1. Dillon Beach & Estero de San Antonio loop — Marin County

    17.2km

    01:13

    330m

    330m

    Intermediate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

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    Intermediate

    Intermediate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

    Intermediate

    Intermediate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.

    Intermediate

    Tips

    October 30, 2023

    This small coastal lagoon is formed by a sandbar that dams Stemple Creek, which starts in the hills of Marin County and flows west near the mouth of Tomales Bay, southeast to Bodega Bay, northwest of Dillon Beach. A variety of seabirds and water species rely on its natural environment, including 923 acres of associated wetlands. The California Department of Fish and Wildlife identifies this marine protected area as one of the most significant habitat areas in the state.
      After climbing all the way to the summits of the ridges on either side of this valley, the road drops back down all the way to sea level to cross the esteros, valleys with rivers affected by the tidal push of water upstream.

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        Elevation 0 m

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        Friday 31 October

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        Max wind speed: 7.0 km/h

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        Location: Marin County, California, United States

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