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

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Do I need to use the Official TCS London Marathon App for the mass event?

No, all mass event participants will have a timing chip in the back of their bib number that will track their progress. You are, however, welcome to use the Official TCS London Marathon App powered by TCS for exclusive audio content and other fun features, or if you'd like to nominate up to three supporters to follow your exact movements on the course.

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