Call Us: (510) 523-8011 | Email Us

Our Facility

The Alameda County Health Department has asked the Bay Area to shelter in place so our facility will be closing as of Tuesday March 17th through April 7th. We apologize for any inconvenience and will be offering you some workout from home options on our Facebook page in the coming days, so be sure to follow there for updates. Please send inquiries to:

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

Camille Hammond

Membership Manager

Galen Lewis

Courtesy Desk and Kids Corner Manager

Sharon Garrett

Group Exercise Coordinator

Rebecca Kahlenberg

Pilates Coordinator

Richard Boody

Weekend Manager