Ren tegen kanker
NN Marathon Rotterdam 2026
Event Information
Currently raised
€1.753.814
Date
12 April 2026
Location
Rotterdam
Participants
2.384
Still days to go
Event
How it works
FAQ
Contact
NN Marathon Rotterdam 2026
The full marathon is SOLD OUT. Sign up for the waiting list for a chance to get a last-minute ticket.
We still have tickets available for the 10 km race—register now!
Run against cancer during NN Marathon Rotterdam 2026 on 12 april 2026. Which distance do you choose? These are your options: 10 & 42km. Register with KWF, raise the minimum of 12 februari 2026 before 750 euro and KWF rewards you with a free ticket.
Join us for the 45th edition of the NN Marathon Rotterdam, the fastest and #themostbeautiful marathon in the Netherlands! Both the world's elite and tens of thousands of runners from the Netherlands and abroad will finish on the heroic Coolsingel during the marathon weekend.
he NN Marathon Rotterdam is one of the fastest marathons in the world, thanks in part to its flat course. The hundreds of thousands of enthusiastic spectators lining the course create a true festival and ensure that no other marathon in the Netherlands can match the atmosphere of #themostbeautiful!
This year, you can once again make your run even more meaningful by getting sponsored for Run Against Cancer. The proceeds will go towards groundbreaking cancer research and better care for everyone affected by cancer. Will you join us?
How it works
Run against cancer during the NN Marathon Rotterdam 2026. Alone or with a team of friends or colleagues.
Start your fundraiser
The full marathon is SOLD OUT. That means you can’t sign up for this distance anymore. But, if you already have a ticket, you can still create a fundraising page! No ticket yet? Join the waitlist and get a chance at last-minute spots.
Buy your own ticket Create a fundraising page and start raising money. Reach 500 euro? Then you will be rewarded with an exclusive Run Against Cancer shirt too!
Share your fundraiser
The more people you engage, the faster you will reach your goal. Fill your action page with your personal story and use Facebook, X, LinkedIn, Instagram and WhatsApp to share your fundraiser This way the news that you are raising money for cancer research will spread quickly! You'll be surprised at the number of people who will help you reach your goal.
Celebrate
Achieved your target amount? Great! Feel like raising the bar even higher? Increase your goal and raise even more funds. Together we can create hope instead of hopelessness for everyone that is affected by cancer.
Participate in a (business) team
Together is better than alone. Team up with your running buddy or run with a group of colleagues. This is how it works:
KWF buys my ticket, how does that work?
1.
Register via KWF
2.
Collect at least 750 euro by 12 februari 2026
3.
Receive an email with instructions
4.
Activate your ticket before 8 maart 2026
5.
Run!
Who motivates your run?
Marline
"I’m running for my little brother, Ruben, who has metastatic testicular cancer. His illness has brought our family closer together. It teaches you what truly matters. The things we used to worry about now feel insignificant."
Justin
“I promised my father I would once run the Rotterdam Marathon. I dedicate this run to him."
Every euro you raise goes towards important cancer research
A better life during and after cancer
That is what scientific research is all about as far as we are concerned. Research that leads to earlier detection, better treatments and optimal care for everyone affected by cancer. Thanks to scientific breakthroughs, more and more people are surviving cancer. Or improve their quality of life if they do not get better. That is why KWF continues to invest unabatedly in research. Run against cancer during the NN Marathon Rotterdam 2026 and contribute to our mission.
Together we raise money for scientific research. Research focused on prevention, diagnosis, and treatment, all the way to improving quality of life. Not only is scientific research funded; a portion of the proceeds also goes to local organizations, such as supporting the IPSO Centers for Living with and After Cancer and palliative care.
FAQ
How much is the registration fee?
We do not charge a registration fee for participating in the Run against Cancer.
Register at the NN Marathon Rotterdam 2026 and create a Run against Cancer fundraising page. There is then no minimum amount that we ask of you.There is no minimum sponsorship amount that we ask from you. If you do raise more than 500 euro, you will be rewarded with our unique Run Against Cancer-shirt! Please note: we do not reimburse tickets purchased by yourself.
How do I get my ticket
After you have collected 750 euro you will receive an email with instructions on how to redeem the ticket. With this you will officially register for your event. Make sure you do this before 8 maart 2026. If you have not redeemed your ticket before this time, your ticket will expire.
Can someone else walk for me if I am unexpectedly unable to walk?
Yes, that is possible. However, if it is shortly before the event, the name on the starting ticket may not be changed. Please contact us about this via rentegenkanker@kwf.nl
Can I change my distance?
This can be done up to six weeks before the event, if there are still tickets available for the desired distance. In any case before the starting numbers are printed.
I registered individually but I am part of a team, can you change this?
Yes, we can adjust that. Just send us an email via rentegenkanker@kwf.nl.
How many runners can you form a team from? And is there also a maximum number of participants?
From two persons. There is no limit on how many participants can be part of a team.
I run a fast time and would like to start in one of the first starting waves, is that possible?
You will receive a registration link from us within two weeks via email when you have collected 750 euro. You can then enter your target time and based on that you will be placed in the correct starting box.
What time do the various distances start?
You can find this information on the website of the running event you are participating in.
I decide not to participate. Can I get my donations back?
No, if you decide not to participate after you have registered, the funds already collected will not be refunded.
When do I have to redeem my ticket?
Redeem your ticket before 8 maart 2026. Not redeemed on time = no ticket.
I have already bought a ticket myself. Can I get the purchase amount back once I have collected 750 euro?
No, tickets already purchased will not be refunded.
I raised a lot more than 750 euro. Can I now also participate for free at another event?
The proceeds of your action are linked to one event. Do you want to participate in Run against cancer again? Then you register for that event and you also collect the minimum sponsorship amount here.
I am a starter runner, what distance is feasible and can I also receive a personal running schedule?
The sooner you start training, the easier running will be. With the app Running with Evy you can create customized training schedules. You can download this app here.
I would like to be able to run faster, do you have any tips for that?
Take a look at hardlopen.nl. There are loads of tips for beginning runners. Such as training schedules, running groups and useful articles that will get you running.
How do I run longer distances without injuries?
Prevention is better than cure, that also applies to injuries. When looking for the cause and then preventing injuries, several factors play a role. The so-called internal factors are, for example, flexibility, stability and strength of joints and muscles. And external factors such as running technique and training structure. There are also several articles about this on hardlopen.nl. For example, read this article.
What do I drink and eat before, during and after the run?
When you talk about preparing for a (half) marathon, you probably immediately think about your training. But did you know that a good nutrition plan in the run-up to a (half) marathon is also very important? Check this article on hardlopen.nl for more tips.
I want to register a team. How does that work?
You can create a team in just a few simple steps:
- Register: Sign up and get a personal fundraising page for your event.
- Create a team: Go to your dashboard, choose "Create a team" and follow the steps.
- Invite team members: Send the unique invitation link to your team members.
- Raise money: Share your team page, ask for donations and celebrate your impact together
How do I invite team members to my team?
Log in to your dashboard and go to "My Team". Here you will find your unique invitation link. Share the link via email, WhatsApp or social media and watch new team members join!
I am participating with a team. How much money do we need to raise to get a free ticket from KWF?
Make sure your team is ready before 12 februari 2026 collects an average of at least 750 euro per person via the team page. This average applies to the entire team.
Example:
- Your team consists of 4 people. Then there must be at least 4 × 750 euro on the team page before the deadline.
- The amount may be unevenly divided, as long as the average per team member is at least .
I want to join a team. How does that work?
There are two ways to become a member:
- Public team: Click on the "Join my team" button on the team page and follow the registration. Within two steps you will have your own action page.
- Closed team: Receive an invitation link from the team captain, click on it and go through the registration. Within two steps you are part of the team and can start fundraising right away.
Where can I find tips on how to recruit sponsors?
Check out our tools and downloads. Follow our Facebook and Instagram Community, where we regularly share tips. You can also ask your questions there.
What is the minimum amount of sponsorship money that I need to be granted a starting ticket?
We ask you to raise 12 februari 2026 by 750 euro Are you running in a team? Then the aim is to raise an average of er person. In the unlikely event that you do not succeed, you can buy a ticket via the NN Marathon Rotterdam 2026.
What if I don't reach the sponsorship amount, am I not allowed to participate?
We ask you to pick up 12 februari 2026 by 750 euro Can't make it? Make sure you buy a ticket yourself through the organization in time. Please note: this event sells out quickly, so be on time.
If I run with my own team, is it also the intention that you collect in sponsorship money per person?
Yes, if you have registered for KWF and you receive your starting ticket via us, this amount applies to everyone. So also to team members. The advantage of running with a team is that you can divide the sponsorship money, so that everyone raises an average of 750 euro
I received a confirmation email for a donation, but this donation is not booked on my page and the amount has been debited from my sponsor. Can you add this amount to my donations?
Yes, that is possible. Ask your sponsor for a print screen of the donation on his or her statement and email it to us via rentegenkanker@kwf.nl. The statement contains a KRI number that makes it easy for us to trace this donation and link it to your sponsor page. And it is also proof for us that the donation has actually been written off.
I no longer receive confirmation emails of the donations or they suddenly end up in my spam box. Can I do something about this?
Check your spam box and indicate that the KWF emails are not spam. You can also email rentegenkanker@kwf.nl.
Until when can money be donated on my page? Until how long after the event will the page remain active?
Donations can be made up to four weeks after the event, then the page will close. You will receive a message when the page is going to close.
I sponsored a participant, but he did not carry out his action. Will I get my donation back?
Donations are non-refundable. Even if participation cannot take place due to exceptional circumstances, including but not limited to weather conditions and (local) government decisions, there will be no refund of donations made on the campaign platform. The donations will benefit the objectives of KWF.
Fundraising with a QR code. How does it work?
- Log in to your account
- Go to your dashboard
- Choose: Edit my page
- Scroll down
- Click on: Download QR code or QR poster
- Save your QR code as PDF
- Share your QR code with your friends and hang the poster everywhere
My employer wants to sponsor me. How does that work?
We prefer to receive donations via your campaign page. Your employer will receive an email with the confirmation of the payment at the specified email address.
Is it not possible to transfer the donation via your campaign page? Then send us the following information via rentegenkanker@kwf.nl:
- Company name
- Contact person's name
- Donation amount
We will then create a donation request (invoice). This request will then contain a reference number that is linked to your campaign. This invoice can be paid via the bank. If the donation is in our account, we will manually add this to your campaign page.
When will I receive the Run against cancer shirt? Will you send it or can I pick it up somewhere?
Zodra 500 euro is opgehaald, wordt het shirt opgestuurd.
I received my shirt, but it is not the right size. Can I still exchange it?
Yes, that is possible. If you are on time, you can still do that before the run, and otherwise on the day itself at the stall/stand of Run against cancer. Email us via rentegenkanker@kwf.nl to provide the correct size. You will then also receive the return address to be able to return the 'wrong' shirt without postage costs.
Can I also print my own logos on the Run against Cancer shirt?
Yes, that is allowed. These costs are for the participant.
Is it mandatory to run in the Run against cancer shirt? Or can I wear my own shirt?
Het is niet verplicht, maar voor de uitstraling van Ren tegen kanker en voor het teamgevoel, is het wel mooi als iedereen zijn shirt aandoet. Dan ben je ook herkenbaar voor de medewerkers van KWF. Ook bij de finish herkennen we de Ren tegen kanker-lopers dan meteen.
I would like to buy a Run against cancer shirt. Is that possible?
No, this shirt is not for sale. You can earn it by raising at least 500 euro for your Run against cancer campaign.
What size shirt should I order?
The shirts run small, order a size larger than you are used to.
Need help with your fundraiser?
We are happy to help you!
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020 570 05 70 Available: |
Together we can make a difference with or without cancer
By mobilising volunteers, activists and talents
we make the most of the power of our community. Together, we make a difference for a better life without and with cancer.
By campaigning about prevention, research and fundraising
we keep all stakeholders aware of the causes and consequences of cancer.
By making strong alliances and partners
we create support and strengthen our position in society.
By focusing on groundbreaking cancer research
we strive for results that really make a difference.
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It starts with you
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and your friends
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who together raise funds for
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less cancer
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more cures
-
and a better quality of life
Together against cancer
Are you joining us?Two ways to participate
Run against cancer during NN Marathon Rotterdam 2026 on 12 april 2026.
Give your run extra meaning by getting sponsored for Run against cancer. The proceeds go to groundbreaking cancer research and to better care for everyone affected by cancer. You can take part in two ways:
Free ticket
Register through KWF and raise 750 euro in sponsorship money before 12 februari 2026. KWF will reward you with a free race ticket!
- Minimum of 750 euro required in sponsorship money
- Free Run against cancer-shirt once you raised 500 euro
- Your own fundraising page
- E-mails with tips & tricks to help you succeed
Buy your own ticket
Buy your own race entry for NN Marathon Rotterdam 2026 and raise as much money as you can with your personal fundraising page.
- Buy your own ticket
- No minimum amount in sponsorhip money
- Free Run against cancer-shirt once you raised 500 euro
- Your own fundraising page
- E-mails with tips & tricks to help you succeed
