Welcome to the official website of the World Natural Bodybuilding Federation – The Netherlands. The WNBF promotes healthy, drug free bodybuilding. In order to keep our competitions fair, athletes will be tested fro drug usage now and in the past in various ways.
WNBF Netherlands is organizing the fourth open Dutch Championship on October 5th, 2025: The Grand Dutch Naturals Cup. This is an international open championship for WNBF Netherlands members and members of other WNBF affiliates. The WNBF Netherlands is looking forward to crowning new Dutch champions.
GRAND DUTCH NATURALS 2025
Official stage photography and video
Receive high resolution, high quality videos and photos from the stage in your mailbox after the competition. You will receive the material ca 2 weeks after the competition.
In stock
Competition location
Theater de Speeldoos, Rembrandtlaan 35, 3741TA, Baarn
Polygraph location
Muziekvereniging Crescendo, Plataanlaan 3, 3741WE, Baarn
REGISTER
Registration is closed.
The registration for athletes has closed. International athletes that require qualification in their own country after that date, please contact us to facilitate your registration.
MEMBERSHIP
A valid membership is obligatory to compete. Become a member by filling out the form here. A membership of WNBF Netherlands also allows you free entrance to the workshops which we organize regularly.
ATHLETE INFORMATION
MUSIC
Athletes in categories Bodybuilding and Classic Physique have a mandatory routine of one minute on their own music.
Please use the form below to upload your music for your routine. We allow only MP3 files with a maximum of 5Mb. The maximum length of the routine and the music is 1 minute. If the upload succeeds, you will receive a confirmation e-mail. Please use your name in the file name, so we know to whom the music belongs to. If you don’t follow the specifications, you risk that you have to do the routine without music or with a song selected on the spot if available. If you do multiple routines for multiple categories, please upload your music for each routine individually.
Please be patient during the upload. This can take a minute.
PROGRAM
The schedule has been updated on September 29th, please bear this in mind. Times are for guidance and can change on the day itself. Please pay attention to the announcements.
REGISTRATION PROCESS
In order to compete in the Grand Dutch Naturals Cup, you will need an active membership with WNBF in your country of residence, or with WNBF Netherlands if there is no WNBF affilitate in your country. Furthermore, you will need approval to compete internationally from the WNBF affiliate you are a member of.
If you want to compete in 1 category, you will need to buy the Athlete ticket 2025. If you want to compete in multiple categories, you will need to buy the Athlete ticket 2025 and one ‘Athlete extra category’ for each additional category. Extra categories can be purchased later, after buying the athlete ticket.
After getting your athlete ticket, we will send you an email with detailed information regarding the competition and drug testing.
For all athletes that want to compete, please find the information you need here. If you have any questions, feel free to contact us.
CATEGORIES
Please check the WNBF website to see the judging criteria for each category. We do allow crossovers between categories, as per WNBF rules.
Next to the divisions listed, every winning athlete of each category will automatically participate in the overall categories for men and women. You do not have to register separately for this. The overall winners will be announced at the end of the event.
Teen categories are for athletes aged 18 or under at the day of the competition. We will offer this category when there is enough interest.
Junior categories are up to 24 years of age and over 18 years old. On the day of the competition, you have to be older than 18 and younger than 24. This is in accordance with the categories at the Worlds.
Athletes over the age of 40 at the day of the competition are eligible for the Masters categories.
Athletes over the age of 50 at the day of the competition are eligible for the Grandmasters categories. We will offer this category when there is enough interest.
eligibility – rules for competing nationally, internationally and at the Worlds
To participate in the Grand Dutch Naturals Cup, you have to be a member of WNBF Netherlands or of the affiliate in your country – if your country has an WNBF affiliate – and have permission to compete from your affiliate. If you are not a member yet, you can sign up here. If your country does not have an WNBF affiliate, you can join WNBF Netherlands as well. All athletes are required to be drug free according to the WADA list for at least 10 years prior to competing. Additionally, you have to comply with the WNBF anti-doping rules. In order to participate, a drug test is mandatory. Failing a drug test or refusing a drug test will lead to immediate disqualification and exclusion of WNBF.
After having a valid WNBF membership and being natural according to WNBF rules, athletes have to qualify first via de national championship in order to compete internationally.
First 5 placed athletes will be qualified for international competition.
First 3 placed athletes will be qualified for competing to the Worlds.
The qualification is valid for 12 months.
If an athlete wants to compete internationally prior to Dutch championship, he or she has to be already registered for the Grand Dutch Naturals of that year and have an online physique check with WNBF NL 4 weeks prior to the competition he or she wants to attend.
PRO CARDS
By participating in the competition it is possible to win a Pro Card if you are passing the urine and polygraph testing. Urine and polygraph tests are obligatory and at the expense of the athletes. Pro Cards are awarded at the discretion of the jury. Winning a category does not automatically grant a Pro Card. Men’s Classic is not an internationally recognized category. There are no Pro Cards in this category.
COACH
We allow one coach per athlete backstage. A coach ticket allows access to the theater and the backstage area.
POLYGRAPH TESTING (OBLIGATORY)
In order to compete, a polygraph test has to be successfully performed. WNBF Netherlands is organizing the tests in the two days before the competition. The polygraph is combined with the on-site registration. Please keep this in mind planning your trip to the competition. In time, you will receive an exact time and location for the polygraph test.
The price of the polygraph is 95 euros. This is not included in the registration. You will receive a seperate e-mail woth payment information and further information about this separately after registering for the competition.
In case you did a WNBF competition prior to the Grand Dutch Naturals Cup, and you passed the polygraph exam there less than 6 weeks prior to the competition, you don’t need to take the polygraph again. If this is the case for you, please reach out to the organization where you took the polygraph and have them send the confirmation to us. Only with this confirmation, you will be exempt of retaking the polygraph test in The Netherlands.
Failing to take a polygraph test, or failing the test itself excludes you from competing in the Grand Dutch Naturals Cup and can lead to a global ban from competing in the WNBF. There will also be no refunds for registration.
Location polygraph testing:
Muziekvereniging Crescendo Baarn
Plataanlaan 3
3741 WE Baarn
ATHLETES CHECK-IN
Prior to the competition, athletes will take their polygraph. This is combined with their registration. There, we will also measure atheletes, in case a category split will be neccesary. In time, you will receive an e-mail to reserve a time slot for the polygraph testing and athlete registration. Please keep this in mind when making reservations for flights and accomodations.
PHOTOGRAPHY
Only the official photography is allowed in the theater. I
When taking snapshots with your phone, please be mindful of other athletes and visitors, who are focussing on their own performances.
LOCATION
Theater de Speeldoos
Address
Rembrandtlaan 35
3741 TA Baarn
Parking
The theatre has it’s own free parking space, with limited spaces available.
Theater rules
- Access only from ages 14 and up. Younger visitors can be refused entrance.
- Kids only have access when attended by an adult.
- When causing nuisance, visitors and athletes can be removed from the venue, including any supervisors.
- In the theater room, no food nor drinks are allowed. You can eat and drink in the restaurant and outside. Please clean up after yourself.
- Athletes with tanning are only allowed in the theater room when completely covered, to prevent staining.
LODGING
There are unfortunately very few possibilities for staying in Baarn. Therefor, we recommend you to book a stay in Amersfoort or Hilversum. Both offer direct trains to Baarn Station, from where the venue is a 15 minutes walk. Getting around in Baarn, is best done by own transport, foot or taxi, as there are no Uber and similar services.
UPCOMING EVENTS
PARTNERS
The WNBF Netherlands open Dutch Championship on October 5th, 2025 is made possible by our partners.
