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Great South Bay YMCA

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(631) 665-4255
(631) 665-4261
200 West Main Street, Bay Shore
NY 11706
Hours
Friday
5:00am - 9:00pm
See more hours
Operating Hours:
Mon - Fri 5:00am - 9:00pm
Sat 7:00am - 6:00pm
Sun 7:00am - 4:00pm
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About

Tucked into Long Island’s South Shore, the Great South Bay YMCA serves thousands of children, teens, individuals and families every day.

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Branch Amenities

Exercise Equipment
Facility Features
Pools
Group Fitness
Programs and Services
Family-Friendly
Child Watch 

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Become A Member

Feel good, do good as a member of the Y community. Get access to our 
locations across Long Island, hundreds of free classes, and great savings.

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What is Happening at the Great South Bay YMCA

Fall 2 programs

Ready. Set. Play!

Fall II Session: Program Registration Starts: Monday, November 9 , 2026 Session Runs: November 22, 2026-February 6, 2027
September 24, 2026
Holiday Camp 2026

Holiday Camp

When school is out, the fun begins at the Y! Our YMCA Holiday Camp gives kids the perfect place to hang out, make new friends, and create lasting memories.
September 8, 2026
Tween Takeover 2026

Tween Takeover

YMCA Tween Takeover is back! This is event is sponsored by Amazon.
September 1, 2026
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Infant Care

Infant Care is now available at the Great South Bay YMCA! Ages 3 Months-18 Months. 1:4 Teacher- to-Child Ratio
August 24, 2026
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Fall Fun for Everyone!

Fall I Session: Program Registration Starts: Monday, August 31, 2026 Session Runs: September 13-November 21, 2026
August 24, 2026
Pilates Reformers Coming Soon!

Pilates Reformers Are Here!

Experience a full-body workout that promotes length, strength, flexibility, and balance using Pilates reformer machines. This low-impact exercise involves pulling or pushing against springs and pulleys, offering a challenging workout without stressing your joints.
July 1, 2026
New Digital Experience is Happening with our Website!

Account Update: Access Your Account

Account Updates: We are excited to announce that Summer Program registration starts on Monday, June 15 at 7 am! As we prepare, please take a quick moment to review your account and complete a few important updates.
June 9, 2026
We're Hiring - Child Care

Child Watch

Great South Bay YMCA Child Watch Hours
June 2, 2026
childcare

Parents Day Out!

Need a few hours to yourself? The YMCA has you covered- Join us for our Parents Night Out, every first Saturday of every month! Kindergarten through 3 grade.
November 4, 2025
YMCA Mobile App

Mobile App is Here!

A Better Way to Stay Connected to Your Y-Right from Your Phone YMCA Daxko Mobile App. This all-in-one app is designed to make staying connected with your Y easier and more convenient than ever.
August 6, 2025
YMCA360xLesmills

YMCA360xLes Mills

Your Favorite Les Mills classes now on YMCA360! Stream Les Mills favorites like BODYPUMP™, BODYCOMBAT™, BODYFLOW™, and more!
August 6, 2025
Jerry Leo 100

Jerry Leo Turns 100!

Great South Bay Member, Jerry Leo Turns 100! She shares her fitness tips, and what her secret is to keep moving is. Plus, she was featured on the news throughout the US and in Australia.
April 14, 2025