Below is information on guidelines pertaining to booking of workouts both in the gym and the pool, as well as group exercise classes.


You can pre-book your training session or a group exercise class exactly five days prior to the class.
You can register for up to five bookings simultanuously, this also includes waiting lists. You are allowed a maximum of three bookings on the same day.
If you are using a punch card, guest training or a free trial, you will have to call us at 22 59 69 50 to book a time.

Find a time that fits and book it here.

Group exercise classes inside our facilities

We do no longer have a ticket system for our group exercice classes.
The front desk will verify your booking upon arrival and let you in. The instructor will register when you arrive for the class. Please make sure you arrive early.

Group exercice outdoors or by another entrance

We do no longer have a ticket system for our group exercise classes. Show up where the class is held or use the alternate entrance. The class instructor will check you in. Please make sure you arrive early.

Waiting lists

Should the class or work out times fill up, you can join the waiting list by clicking the booking button. We will notify you of your number in line. Check «My bookings» to see updates of your spot in line.
There are often cancellations and they typically happen right before the cancellation deadline. We will send you an sms should a spot open up, so it is important that we have your cell phone number on file.


If you are not able to attend your booking, you may cancell it at the latest three hours before the booked time or class. You have to do it online or in the Mitt SiO app. If you are using a punch card, guest training or a free trial, please call us at 22 59 69 50.

Note: We appreciate that you cancel as early as possible, so that others may enjoy the training time.


If you do not show up for the booked work out session, or are late with the cancellation, you will be marked as a no-show. If this happens twice, you will not be able to book sessions online or in the app for the next 10 days. You can pay NOK 15 to have the booking ban removed. To remove the booking ban, you must contact one of our receptions.

Note: During the period you are banned from booking sessions online, you can book sessions from the reception from 60 min before the class/session starts.