Open gym · Groningen
Train on your own, without the crowds.
At Sterck Boutique Gym you train as much as you like in a calm, premium gym on the Boumaboulevard in Groningen. A maximum of 100 members, open 24 hours a day, and always a spot, because you book your session in advance.
Book your free trial weekUnlimited training for €61.25 a month
Open 24/7, 365 days a year
Before work, in the afternoon or late at night: you decide when you train. You get in with your personal QR code.
Book your slot, always a spot
You book your session in advance in the app, as often as you like. So there is always room, even at busy times.
A maximum of 100 members
We deliberately keep membership small. No queues for equipment and no crowded floor, just calm and space for your own workout.
High-end equipment
Quality strength machines, free weights and cardio. Everything you need for a complete workout.
Like-minded people
You train among people who are as focused on their training as you are, in a pleasant, professional atmosphere.
Meet us first
You start with a short 15-minute introduction. We get to know you, hear what you're looking for, show you around and explain how Sterck works.
What you get
- Unlimited training, 24/7
- Unlimited bookings in the app
- A personal introduction first
- Different membership options
- Try a week for free first
Combine with personal training
Want an occasional check on your technique or programme? Add one personal training session a month for €75, or choose regular coaching.
More about personal trainingQuestions about open gym
How much does open gym cost at Sterck?
We have several open gym memberships, starting from €61.25 a month. You train as much as you like, 24/7, and book as often as you want. During the introduction we discuss which membership suits you best.
Can I try it first?
Yes. After a short 15-minute introduction you get a free trial week, with no obligations.
Why do I need to book?
Booking means there is always a spot for you and the gym stays calm. Bookings are unlimited and done in the app.
Try open gym free for a week.
Book a 15-minute introduction. We show you around, and then you train for a week on trial.
Book your free trial week