In alignment with the Bay Area’s current stay at home order, we will be closing both the pool and fitness suites as of today, Dec 6th. The indoor common areas also remain closed.

Crossfit will continue to run by appointment, in our outdoor area. We hope to re-open Jan 4th or soon after, and will keep you all updated here and via our Facebook page. We need and appreciate your continued support.

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    Mariner Square Athletic Club was built in 1978 and went by the name of Supreme Courts. During those early years it was a racquetball club which housed Nautilus of Alameda. In 1981 Kathy Wagner became the owner of the facility, complete with 16 racquetball courts, a snack bar and eight employees.

    Since that time Kathy Wagner has kept up with the ever-changing fitness industry. During the mid-1980’s an indoor swimming pool was built, courts were converted into fitness centers and the snack bar was remodeled into a full functioning cafe. Over the years various other renovations have helped to keep MSAC a leader as one of the East Bay’s largest full-service health clubs.

    Learn More

    Largest Free Weight Area in the Bay
    Private Whirlpools, Steam and Saunas
    Fully Certified Instructors/Trainers
    No Crowds/No Waiting
    Over 80 Classes per Week
    Alameda’s Only Indoor Pool
    Free Parking
    Expansive Pilates Program
    Free Wireless Internet Access
    Family Owned and Operated
    Friendly Staff




    Our Location

    Call Us: (510) 523-8011

    2227 Mariner Square Loop Alameda, CA 94501