Registrations for the may 50k 2025 will open soon!

The May 50K is a virtual fitness and fundraising challenge to help you achieve your health and fitness goals. You can take part in your own time, at your own pace and in and around your local area.

The money you raise will enable the Multiple Sclerosis International Federation (MSIF) to collaborate with its members across the world to improve the quality of life and wellbeing of everybody affected by multiple sclerosis.

It’s important that we stay fit and healthy by looking after our physical and mental well-being. The May 50K is a great way to combine the two!

Let’s come together as a community to leave MS where it belongs, behind us.

How it works

Sign up

Sign up to roll, walk or run 50kms in May with our Virtual Challenge.

Share and spread the word

Tell everyone about your challenge and raise funds to support people living with MS.

Ready, set… go!

Track your kilometres and challenge yourself throughout the month of May.

A UNITED FRONT

DMSG (Germany), Stichting MS Research (Netherlands), the UK MS Society, and MS Ireland are world-leading MS organisations and they have all come together with the MS International Federation to bring you The May 50K! 

The May 50K is a great way to stay fit and help fund vital MS research worldwide, improve access to effective treatment and support for everyone – no matter where they live.

As a virtual fitness and fundraising challenge, it can be completed anywhere – on your own in your local area and even in your home. It’s important to stay fit and healthy, so sign up now and help put MS where it belongs, behind us.

#TheMay50K