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Our Facility

We are live for Pool Lane rentals now, and Fit Pod bookings beginning Oct 5th. Please click here for the complete announcement.

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About Mariner Square Athletic Club

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.


  • 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 Staff

Jeff Ray

General Manager
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Camille Hammond

Membership Manager
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Galen Lewis

Courtesy Desk and Kids Corner Manager
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Sharon Garrett

Group Exercise Coordinator

Rebecca Kahlenberg

Pilates Coordinator
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Richard Boody

Weekend Manager