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The Big Half 2024 

On 1 September 2024, take part in one of the UK's best half marathons. Help to fund our direct advice and support services, and our work fighting for a better care experience for children in care and care-experienced young people.

Run half of the world-famous London Marathon route: an awesome 13.1 miles starting at Tower Bridge and finishing at the Cutty Sark in Greenwich...

…and then celebrate finishing this exciting London half marathon with the Become community.

By fundraising for Become, you can skip the £56 public registration fee and run for free!

Register below and we’ll get in touch ASAP. Your place isn’t secure until you’ve had this confirmation from us, so sit tight, and then you can buy those new running shoes!


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The suggested fundraising target for this challenge is £250. I commit to fundraising as much as I can.
I'm happy to accept a higher target and commit to raising £500
How did you find out about us?*

We will use your information to support you during this challenge. Can we also keep you updated with the difference you make and other ways you can get involved?

Each year, we bring a team together for this event because of shared values. The Big Half’s mission is to empower runners of all backgrounds and experiences to feel the mental and physical health benefits of running. So, what are you waiting for?

Don't just take our word for it... listen to Sahil talking about his experience of running for Become

“I'm already pumped to do it again! That's because of the support and the level of ideas, and the people, and the energy. It's just amazing.”

⎯⎯ Sahil, 2022 and 2023 Big Half finisher

Why support Become? 

Your support is important because every pound you raise will help to fund our campaigns and direct services for children in care and and care-experienced young people. You’re ensuring there’s someone at the end of the phone when a young person calls for help and that the voices of care-experienced young people are amplified to bring about the change they want to see in and around the care system.


We ask our runners to commit to fundraising at least £250 for Become to support our vital services and work with and for care-experienced children and young people. We will support you to reach this target!

To get your place, please complete our registration form above. If you have any questions, email [email protected]

  • You’ll be invited to join a Whatsapp group and Strava club with other runners to support each other. 
  • Your choice of Become technical running vest or tee (mens, womens & unisex sizes available)
  • Fundraising support and tips which will make smashing your target as easy as possible.
  • Training plans and advice whether you’re a beginner, intermediate or advanced runner.
  • Race day cheering points and post-race party!

The Big Half 2024, otherwise known as the Vitality Big Half 2024, is a London Half Marathon and is considered to be one of the UK’s best half marathons!

The route runs from iconic London landmark Tower Bridge to Cutty Sark in Greenwich, and you can download the 2023 route map below.

The Big Half 2024 is taking place on 1 September.

Become is the national charity for children in care and care-experienced young people. For over 30 years we have stood shoulder to shoulder with young people and have worked tirelessly to campaign and provide services with and for care-experienced children and young people.

Have another question?

Email us at [email protected] or call 07508 190701

Take a look at some photos from previous Big Half editions and feel inspired!