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TCS London Marathon 2026

Join Team Breathe for the TCS London Marathon

26 April 2026

The TCS London Marathon is the ultimate bucket-list event. You'll join 50,000 other runners and take on the UK's biggest marathon and run past iconic London landmarks whilst joining the fight for lung health.
Whether this is your first marathon or you're a seasoned pro, running as part of #TeamBreathe will be a challenge you'll remember.

Sign up

What we do for you!

Exclusive access to our professional running coach who can answer any of your questions
An invitation to our fantastic after party to celebrate your achievement
The loudest and liveliest cheer points in town
Our team of fundraising experts are on hand to help make your fundraising a breeze!
Opportunities to learn about the work you’re funding
Your very own Asthma + Lung UK technical running top to get to that finish line in style!