GMAC provides an opportunity for all swimmers, regardless of age or ability, to reach their highest personal potential as both a person and athlete.  We will emphasize individual and team growth, by guiding participants through an aquatics program that stresses a thorough knowledge of the sport, a healthy lifestyle and spirit of sportsmanship.

We have a new website at

New swimmer information: New swimmers must be evaluated by a GMAC coach prior to registering to ensure that they are placed in the level appropriate for their skill. When you arrive at the pool, tell the attendant at the front desk that you are there for a GMAC swim team evaluation. Upon completion of the evaluation, the GMAC coach will let you know what level is appropriate for your swimmer. You may then register and pay online. All practices will be at the Great Mills Pool. USA Swimming registration is MANDATORY for ALL GMAC swimmers.

Please note that swimmers must be at least 6  years old and be able to cross the Great Mills Pool with assurance and  swim freestyle and backstroke within a certain time. Coaches will give you the info at tryouts  In case of bad weather, please check pool status by contacting the Great Mills Pool at 301-866-6560.

Great Mills Aquatic Club Inc. and Great Mills High School swim team are separate entities.


High School Swimmer Punch Pass 

Allows for up to 20 drop-in practices (during regularly scheduled level Senior  practice). Available for purchase only during High School swim season

  • Available only to USA Swimming registered swimmers that are on a high school swim team
  • Good during the high school swim season.

  • Only one may be purchased per swimmer during the High School swim season
  • No reimbursement for unused practices

Participants may participate in GMAC attended USA swimming meets if they do not conflict with high school meets. Regular meet fees will apply ($7 dollar admin fee and per event charges)

Swimmers using the Punch Pass will need to show the Pass to the Front desk Pool attendant who will write down the date in the specified area.  Passes purchased online will be available at the front desk on Monday November 19 2016, first day of that session.

GMAC's Open Water Warriors Photo Album: Click here to see the album

GMAC' s Quarterly Newsletter

2017-2018 Season Sessions:

Aug 14 - Nov 11     High School   12 week session

Aug 14 - Jan 6         Session 1        20 week session

Jan 8 - May 12        Session 2        18 week session

May 14 - July 31      Session 3 LC  11 weeks