Find out how to take on the TCS London Marathon for charity 
 

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How do I log in to the Official TCS London Marathon App?

It's easy to log in to the Official TCS London Marathon App powered by TCS – you'll just need your booking reference, email address and date of birth. We'll email your booking reference to you when the Official TCS London Marathon App is launched so you can have it close to hand when you use it for the first time.

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