WELCOME TO SOUTHIE

Mass Underground is excited to announce the opening of our second location on East 1st & K Street in South Boston! Memberships are now available for purchase.

JOIN NOW

Book your tour to see the space!

We recommend new members book a walk-through tour to see all that the space has to offer. During your tour, you will have the option to stay and get in a FREE trial workout on us!

Book Now

SOUTH BOSTON MEMBERSHIPS

YEARLY

For the best deal, commit for 1-year!

$149/Month- Billed Monthly

6 MONTHS

Option to join for a 6-month commitment.

$159/Month- Billed Monthly

MONTHLY

Not ready for long-term? Join our monthly membership!

$179/Month

JOIN NOW

INCLUDED AMENITIES

Every Mass Underground, Southie membership includes access to all of our cardio equipment, machines, free weights, saunas, ice baths, lockers, and facilities.

Your membership grants you access to our South Boston location Monday-Sunday, 365 days.

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CONNECT WITH US

@massunderground.southie