Middle Atlantic Swimming (MASI) is one of 59 Local Swimming Committees (LSC's) of USA Swimming, the national governing body of competitive swimming in the United States. MASI consists of Eastern Pennsylvania, Southern New Jersey, and all of Delaware. We have over 115 member clubs, 11,000+ athletes and 1,200+ officials, coaches and non-athlete members. 

Our LSC is driven by:

Our Mission

Middle Atlantic Swimming advocates the growth and development of our safe and diverse swimming community through education, innovation and a commitment to excellence.
Our Vision

Utilize the sport of swimming to inspire strong leaders, build character and achieve excellence.
Our Values


A Tradition of Excellence
Of the 200 clubs awarded by the USA Swimming Excellence Program in 2022, 8 were from MASI
Of over 3,000 USA Swimming clubs, 25 of the top 500 are part of Middle Atlantic Swimming. 
Middle Atlantic Swimming has had at least one athlete on each Olympic team since 1952.

Latest Middle Atlantic Swimming News

Middle Atlantic & Egg Harbor Township Seahawks to host 2023 Eastern Zone Open Water Championships

Middle Atlantic Swimming is proud to partner with the Egg Harbor Township Seahawks to host the 2023 Eastern Zone Open Water Championships in Marmora,...

By James Platt

2023-24 Approved Meet Schedule

The MASI House of Delegates approved the 2023-24 Meet Schedule. The schedule is here.

By Mike Seip

2023 Elite Select Camp under Gregg Troy in Florida

BLUE BELL, PA – Middle Atlantic Swimming’s highest qualifying-level athletes recently returned from a four-day Elite Select Camp under former U.S. Olympic Coach Gregg...

By James Platt

Meet Director and Operational Risk Director Workshop Schedule Spring/Summer 2023

All participants must be non-athlete members of USA Swimming. The workshops are for all new and re-certifying Meet Directors and Operational Risk Directors. Please...

By Mike Seip

The Swim Club Operations Manual

Middle Atlantic Swimming is excited to announce our partnership with Your Sports Resource to create a unique opportunity for our member Clubs. Your Sports...

By James Platt

Middle Atlantic Swimming Takes Home Second Annual Tri-State Cup

YORK, Pa. - For most of the calendar year, most of the Middle Atlantic Swimming members are competing against each other at meets throughout...

By Scott Day

Exciting New Middle Atlantic Swimming Championship Series Coming in 2023

BLUE BELL, Pa. - For many years, the Middle Atlantic Championship series has brought thrilling moments, captivating crowds, and memories to last a lifetime....

By Scott Day

Eight Middle Atlantic Swimming Clubs Earn USA Swimming Club Excellence Accolades

COLORADO SPRINGS, Colo. - Middle Atlantic Swimming (MASI)continues to be a force on the national level after eight different MASI clubs are recognized by...

By Scott Day

Follow Us Fridays! Join in On the Fun!

This week, we are kicking off a new Fall Campaign with “Follow Us Friday”! We’re kicking it off in a BIG WAY with THREE...

By Scott Day

51 Middle Atlantic Swimming Members Earn USA Swimming Scholastic All-American Honors

COLORADO SPRINGS, Colo. - For the past few months, the hashtag #ChampionsSwimWithUs has circulated amongst the Middle Atlantic Swimming family. That hashtag is not...

By Scott Day

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