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JDRF has now rebranded to Breakthrough T1D.
Our name has changed, our mission has not.

Register for a Breakthrough T1D charity place in the TCS London Marathon 2026

We have now allocated our charity places but still welcome your application to be added to our waiting list. On receiving your application, our team will be in touch if we’re able to offer you a place.
Content last reviewed and updated: 26.06.2025

Why join Team Breakthrough T1D?

Our support includes:

  • Dedicated support from our friendly Events team from the moment you sign up; including regular catch-ups with training and fundraising tips.
  • On-going support with your training from our professional fitness coach, plus invites to a variety of in-person and virtual training events.
  • Your very own Breakthrough T1D running top*.
  • Cheering materials for your family and friends.
  • Team photo on the morning of the marathon in Greenwich Park.
  • Fantastic support from our cheer point on route.
  • A well-deserved post-race reception which includes a free massage to ease those weary legs, food to recover and a glass of fizz to celebrate.
  • An invite to join our #TeamBreakthrough community via our WhatsApp and Facebook groups.

*Order yours from January 2026 once you have raised £100 or more towards your target.