Get set for The Big Half

Sunday 7 September 2025

    What is The Big Half?

    Organised by London Marathon Events, The Big Half is a vibrant, inclusive half marathon with a fun, festival atmosphere. The 13.1 mile course weaves through London from Tower Bridge to the iconic Cutty Sark in Greenwich. 

    The New Balance Big Relay covers the same course in four legs and the Big Mile is free, family-friendly event that takes place on the same finishing stretch, ending at the Cutty Sark. 

    The Big Half will take place on Sunday 7 September 2025. You can buy general entry for £56.50.

    In 2024, it began at 08:25 with the Elite Wheelchair race, followed by the Elite Men and Women and the first mass wave at 08:30. Then waves every 10 minutes until 10:00.

    Enter The Big Half 2025
    The Big Half design team

    Meet The Running Charity

    The designers of the 2024 finisher T-shirt and medal

      • Training plans

        No matter what your ability, our training plans will help you feel ready to go at the Start Line

      • Tell us your story

        Every participant has a unique reason for taking part – what's yours?

      • We Run As One

        Discover what we’re doing to help make running accessible to all

      • Training plans

        No matter what your ability, our training plans will help you feel ready to go at the Start Line

      • Tell us your story

        Every participant has a unique reason for taking part – what's yours?

      • We Run As One

        Discover what we’re doing to help make running accessible to all

      • Training plans

        No matter what your ability, our training plans will help you feel ready to go at the Start Line

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