Half marathon

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Runner celebrate on the Big Half course

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Finisher celebrating
Event overview

A vibrant, inclusive half marathon that celebrates the diversity of London

Join the city’s most vibrant celebration of community and movement at The Big Half. Feel the energy as you run through the heart of four boroughs - Tower Hamlets, Southwark, Lewisham, and Greenwich - each bursting with culture, spirit, and support.

Whether you're taking on the full half marathon, teaming up for the New Balance Big Relay, or joining the fun at The Big Mile, this is your moment to be part of something unforgettable.

Read the story behind this year's medal

First held in 2018, The Big Half starts at Tower Bridge and finishes by the famous Cutty Sark in Greenwich.

Volunteer

You could play a crucial role in the delivery of the event.
Volunteers hold out bottles of water to runners