Question 1

Do I need experience to join O.N. Athletics?

Accepted Answer

No. Members here range from people walking into a gym for the first time to lifelong athletes. Your free intro starts with a conversation about where you are today, and we build from there.

Question 2

Is O.N. Athletics a 24/7 gym?

Accepted Answer

Yes. Members get 24/7 member app access to the full 7,200+ sq. ft. floor 24 hours a day, seven days a week, so you can train at 4 AM before a shift or at 10 PM after the kids are down.

Question 3

What equipment do you have?

Accepted Answer

Squat racks, lifting platforms, bumper plates, a full dumbbell and barbell range, benches, plate-loaded, selectorized and cable machines, rowers, bikes, treadmills, open training area, and an on-site sauna.

Question 4

Do I have to do CrossFit?

Accepted Answer

No. Most members train on their own or with a personal trainer. CrossFit DYR classes are here whenever you want coached group training, and you can add them later or never at all.

Question 5

Is the gym crowded?

Accepted Answer

We deliberately cap membership to help reduce overcrowding and maintain a comfortable training environment with better access to equipment and training space. Member schedules also spread across the whole clock, from pre-dawn lifters to overnight shift workers. Early evening is honestly our busiest window, and the quietest hours are late night and early morning.

Question 6

Do you intentionally limit membership?

Accepted Answer

Yes. We deliberately cap membership to help reduce overcrowding and maintain a comfortable training environment with better access to equipment and training space.

Question 7

Can I try it before joining?

Accepted Answer

Yes, two ways. Your first intro session is free and includes a tour and a conversation with a coach, or you can buy a $15 open gym day pass and train on your own for a visit. Details are on the drop-in page.

Question 8

Who are your coaches and trainers?

Accepted Answer

Our CrossFit DYR coaches and personal trainers all coach here full time and carry current certifications. Ask at your free intro and we will match you with the coach whose background fits your goals.

Question 9

How do I join?

Accepted Answer

Book a free intro, come in for a tour and a conversation about your goals, then pick the membership that matches how you want to train. You can start the same day.

Question 10

How much does a membership cost?

Accepted Answer

Open gym starts at $45/month, CrossFit DYR classes start at $150/month, and personal training starts at $70/session. Military, first responder, family, and student rates are available, ask at your free intro.

Question 11

Is strength training good for weight loss?

Accepted Answer

Yes. Building muscle raises the amount of energy your body uses at rest, and strength work paired with conditioning and sensible nutrition is one of the most reliable ways to change body composition and keep it there.

Question 12

Where are you located and is there parking?

Accepted Answer

We are at 800 Flanders Road, Building 9 Unit 5, Mystic, CT 06355. Flanders Road runs parallel to Route 117 and connects to Routes 184 and 1, so we are minutes from downtown Mystic. Parking is free and on-site, right outside the door.

O.N. Athletics

A 24/7 Gym in Groton & Mystic, CT

Choose How You Train

24/7 Open Gym

Strength Training

CrossFit

Personal Training

Also Available

Youth Athletics

Recovery & Sauna

Nutrition Coaching

More Ways to Train. One Place to Do It.

24/7 Access

7,200+ Sq. Ft. Facility

Commercial Gym Equipment

Strength Training

CrossFit

Personal Training

Intentionally Limited Membership

7,200 Square Feet, Open Around The Clock

What Our Members Say

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Find Your Fit

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Frequently Asked Questions