U.S. Masters Swimming Membership Directory
Mason City Masters Swim Club (MASN) is an official U.S. Masters Swimming (USMS) workout group, registered in the Iowa LMSC.

Mason City Masters Swim Club is registered under the Iowa Masters (IAMA) club.
Select a Registration Year:
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Sponsor #29Sponsor #20Sponsor #49Sponsor #36Sponsor #55
Sponsor #42Sponsor #14Sponsor #57Sponsor #52Sponsor #56
Sponsor #51Sponsor #13Sponsor #58Sponsor #25Sponsor #43Sponsor #59Sponsor #41
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