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    Visitor training on the open gym floor at O.N. Athletics in Groton, CT

    Just Visiting?

    Drop In & Day Passes

    $15 Open Gym Day Pass  ·  $25 CrossFit Class Drop-In

    In town for a few days, stationed nearby, or passing through on I-95? Train with us for a single session: $15 for an open gym day pass, or $25 for a coached CrossFit Dýr class drop-in.

    Day Pass

    $15 Open Gym Day Pass

    One visit, full access to the 7,200+ sq. ft. floor: squat racks, platforms, barbells and bumper plates, the full dumbbell range, plate-loaded and selectorized machines, cables, cardio, the open training area, and the sauna.

    • Hours of use: any time the day of your visit, we are open 24 hours
    • Free on-site parking directly outside the door
    • Digital waiver sent before you arrive, no paperwork at the door
    • Bring athletic clothes, supportive shoes, and a water bottle

    Class Drop-In

    $25 CrossFit Class Drop-In

    One coached CrossFit Dýr class with a coach who will scale every movement to your ability. All levels welcome, no experience needed.

    • Any class on this week’s schedule, reserve your spot in advance
    • Free on-site parking directly outside the door
    • Digital waiver sent before you arrive, no paperwork at the door
    • Bring athletic clothes, supportive shoes, and a water bottle

    Dropping into a coached class instead? Pick it below and we’ll get you on the schedule.

    Register Your Visit

    Tell us when you are coming and we will confirm your slot and send the digital waiver.

    What kind of visit? *

    Staying longer? Look at membership pricing or read about 24/7 open gym access.

    Common Questions

    Drop-In Questions

    Yes. Register through the form on this page so we can confirm a time and send the digital waiver before you arrive.

    An open gym day pass is $15 and gives you the full floor for the day. A CrossFit Dýr class drop-in is $25 for a single coached class.

    Yes. Experienced athletes are welcome in class, and the coach will scale the workout to what you can do that day. Class times are listed on the CrossFit page.

    Athletic clothes, supportive shoes, and a water bottle. Everything else, including all equipment and the sauna, is here.

    Still Not Convinced?

    We'll make it easy

    Find Us

    Come Visit Us

    Address

    800 Flanders Road, Building 9 Unit 5
    Mystic, CT 06355

    Serving Groton, Mystic, Noank, Stonington, New London, Ledyard, Gales Ferry & Southeastern Connecticut

    Directions & Parking

    Off Flanders Road, connecting to Routes 184 and 1, minutes from downtown Mystic and a short run from I-95, Noank, Stonington, New London, and Naval Submarine Base New London. Free on-site parking directly outside the door.

    Get driving directions

    Call or Text

    (860) 415-4909

    Hours

    Open 24 Hours7 Days a Week

    24/7 member access through our member app

    Call or Text