Swim along

Unfortunately we have decided to cancel Amsterdam City Swim 2021.
Due to additional governmental measures concerning the corona virus the permit from the city council of Amsterdam has been postponed. Therefore the organization is unable to facilitate a qualitative and safe event and has decided to cancel this years swim. However, this does not mean that we will stop with raising money for Stichting ALS. We claim Sunday 29 August as the day to mobilise the whole of the Netherlands for the deadly disease ALS with the challenge #natpakvoorALS. More information you can find on our socials.
(The information below does not apply to 2021 anymore)



The Amsterdam City Swim is for everyone who wants to extend a helping hand to Stichting ALS Nederland (Dutch ALS foundation) and who loves swimming.

ACS for Kids is for children between ten and fourteen years old. For the adult swimming event you have to be at least fifteen years old. We expect children to collect at least 100 euros for Stichting ALS Nederland and adults to collect at least 400 euros. 

The water will be thoroughly inspected in advance. 

When you submit to the swim of your choice, the rest of the information will be in Dutch.

ACS for Kids


Make a donation

Would you like to sponsor a wavemaker or team? Or would you like to give a general donation? Go to this page. You can find the English User Guides below. 


Business Team registration

We think it's great that your business team is swimming along with us! The Business Team package is €1,100 (excl. VAT) and includes:

  • Swimming cap with time recording, slippers, and towel
  • Business team team page with logos
  • Separate place in the reception tent where all business teams are welcomed
  • Snacks and drinks
  • Electrifying after-party  

Amsterdam City Swim – a short history

In 2011, fourteen friends started a fundraiser for ALS, a deadly motor-neurone disease that their friend Weert-Jan Weerts was suffering from. After that first fundraiser, they decided to expand the campaign. Today, the Amsterdam City Swim is an annual event in which thousands of people participate. The foundation wants to raise as much money as possible for ALS research. 

Programme and route

On Sunday 28th August 2021 we are hosting the eighth edition of the Amsterdam City Swim. More information and details about the day and the route will be posted here soon. During the Amsterdam City Swim over 3,000 participants will jump into the deep end for ALS. After the swimming event, the award ceremony and the cheque handover will take place at the Marine Etablissement Amsterdam as is the tradition. After that, we're going to raise the roof and our glasses to all those loved ones for whom we organize the Amsterdam City Swim! All participants and supporters can enjoy snacks and drinks throughout the day.


Swimming in open water is never entirely without risk. Unlike water in swimming pools, special conditions can always occur in open water: the water may be cold, there may be local pollution, underwater obstacles, thunderstorms, etc. The concentration of bacteria and other microorganisms in canal water can also be higher. This increases the risk of infections of especially the gastrointestinal system, but also the eyes, ears, and skin, especially if you have open wounds.

Together with Waternet, Amsterdam City Swim continuously monitors the water quality. We keep a close eye on developments and keep our participants informed. We use the expertise of the Royal Netherlands Sea Rescue Institution, supervising authorities, input from Waternet, police and water police, fire brigade, Municipal Health Service, and doctors to improve our protocol every year.

If you have any questions, feel free to send an e-mail to info@amsterdamcityswim.nl

If you want to stay up to date about the latest news, be sure to follow us on social media.

During the Amsterdam City Swim, the safety of swimmers is guaranteed by Royal Netherlands Sea Rescue Institution lifeguards in the water and supervisors on the quay. A first-aid station and a resting point on the water are stationed at every 500 metres.

Indemnity statement

We ask all participants to sign an indemnity statement prior to the Amsterdam City Swim. 

What happens to my donation?

During the Amsterdam City Swim we jump into the deep end for ALS and try to collect as many donations as possible. 100% of every euro which has been trained and swam for and is brought in as a donation goes to research to find a cure for ALS and to improve the quality of life of ALS patients.