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Northern California Open Water Swimming Association

Professional, unbiased non-profit open water swimming ratification

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    • Round-Trip Angel Island
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    • Circumnavigation of San Francisco
    • Round-Trip Prison (San Quentin-Alcatraz)
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Four Islands Marathon Swim Results

As successful swim attempts through the Northern California Open Water Swimming Association occur, swims will be ratified on a rolling basis as the Ratification Committee reviews the data from each swim.

Four Islands - 14 miles (22.5 km)

Circling four islands in the San Francisco Bay (Yerba Buena, Alcatraz, Angel Island and Treasure Island), this 14-mile course gives a 360° view of the Bay. Defined by the Northern California Open Water Swimming Association, this swim will test your patience and perseverance.
NameTypeCountryRouteTimeDate
Erika Shanahan GliebeSoloUSAYBI-Alcatraz-Angel-TI-YBI07:03:24October 7, 2020
Andrew PackerTandemUSAYBI-Alcatraz-Angel-TI-YBI06:27:23April 2, 2022
Bárbara Hernández HuertaSoloChileYBI-Alcatraz-Angel-TI-YBI07:24:54June 6, 2022
Fiona CaulfieldSoloUSAYBI-Alcatraz-Angel-TI-YBI06:14:19September 15, 2022

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