Embark on an extraordinary journey of endurance and determination with Immunodeficiency UK Challenges. Whether you’re a seasoned athlete or a passionate newcomer, our events offer a unique opportunity to make a difference while testing your resilience. Take on the challenge, conquer the miles, and unite with fellow adventurers to support those affected by immunodeficiency. Together, we can strive towards a brighter, healthier future. Are you ready to run for a cause? Have any questions or require support in your fundraising, just email hello@immunodeficiencyuk.org.

Hikes and Walks 2025

Runs

Taking Part in an Event Not Listed with Us?

Are you signing up for a walk, run, or trek that isn’t listed on our site? Whether it’s a local fun run, a marathon abroad, or a personal walking challenge, you can still be part of #TeamIDUK and fundraise to support people affected by immunodeficiency.

We’d love to support your efforts. When you register your challenge with us, we can provide:

  • An Immunodeficiency UK branded running vest or t-shirt

  • Fundraising tips, tools, and guidance

  • Shout-outs on our social media channels

  • Encouragement and support throughout your journey

Looking for inspiration?

Visit timeoutdoors.com/events to browse hundreds of regional walking and running events you can join.

Once you’ve chosen your challenge, let us know!

Email us at hello@immunodeficiencyuk.org to join our amazing community of supporters.

Together, every step you take makes a difference.