Cancel your Fitnessking subscription by mail
For Fitnessking the route is a written letter: cancellation requests are taken by post, and certified mail shows when yours arrived. Fitnessking receives written requests in Koblenz, Germany.
Let Postbye cancel Fitnessking for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Money-back guarantee within 10 business days.
Postbye is not affiliated with Fitnessking.
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- 3 Fitnessking cancellations handled this month
- Certified mail with tracking
- Mailed every business day
- Delivery proof sent to you
- We confirm your cancellation
How to cancel Fitnessking by mail
Find your account details
Fitnessking will look your account up from what the letter says, so check your membership number, the home club you joined at and the name on the membership agreement first.
Set out the request
Because Fitnessking is dealt with in German, the letter is written in German (template de). Subject: “Betreff: Kündigungsanfrage – [your name]”. It requests an end to the subscription and to every further charge, plus written confirmation.
Mail it with tracking
Send it certified to Koblenz, Germany, copying the address from the next section letter for letter, and keep the receipt slip.
File the delivery record
It shows the date Fitnessking received your letter. Check your next statement: no Fitnessking charge should post after the cancellation date.
With Postbye, steps 2 to 4 take about two minutes of your time.
Where your Fitnessking cancellation letter goes
Fitnessking lists Carl-Zeiss-Straße 10, 56070 Koblenz, Germany as its mailing address.
Postal code 56070 places the address in Rheinland-Pfalz, Germany.
Your name, address and email appear in a short block labelled Kontoinhaber, Hinterlegte Rechnungsadresse and Hinterlegte E-Mail-Adresse, under the greeting “Sehr geehrte Damen und Herren,”.
Prefer to write it yourself? Use our letter template
Every address we hold for Fitnessking, with the envelope wording
Before you cancel Fitnessking, check these
- Freezing or pausing a membership is not cancelling it. Say clearly that you want the membership ended.
- Read the notice window in your agreement. A letter that arrives after the cut-off can miss that month's charge.
- Annual fees and monthly dues are sometimes billed separately. Ask for both to be ended.
Several states set rules for subscriptions that renew on their own. See what yours requires in automatic renewal laws by state.
Let Postbye cancel Fitnessking for you
We write your letter, mail it by certified mail the next business day, and confirm when the cancellation went through. You keep the signed proof.
Cancelling a gym or fitness membership
Gyms often require written notice, set a notice window before the next billing date and can tie the cancellation to the home club, so a dated letter is the record that counts.
A letter is the formal route: it states the request in writing, carries a date and, sent by certified mail, comes with proof of delivery.
Fitnessking cancellation at a glance
- How Fitnessking accepts cancellations
- By mailed letter
- Mailing address on file
- Fitnessking Carl-Zeiss-Straße 10 56070 Koblenz Germany
- Country
- Germany
- Letter language
- German (template de)
- Category (from the company name)
- Gyms & fitness
- Added to the database
- May 19, 2026
- Data last checked
