Big Half 2026

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.

When: 6 September 2026

Where: London

Registration Fee: £30

Minimum Fundraising: £350

How we will support you

Register to run for #TeamMarvellous and receive:

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Support from our dedicated fundraising team

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Your very own Roald Dahl's Marvellous Children's Charity running vest to wear with pride

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A coveted medal and finishers t-shirt

Register your interest for a place below and let us know why you would like to run for Roald Dahl’s Marvellous Children’s Charity.

Register your interest:

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