A photo of London with the sky reflecting on the water.
Run

The Big Half 2025

  • Date and Time info: 7/09/2025
  • Location: London
  • Registration fee: £35
  • Fundraising target: £500
  • Face-to-face

The Big Halfis a vibrant, inclusive half marathon with a fun, festival atmosphere and the 13.1 mile course weaves through London from Tower Bridge to the iconic Cutty Sark in Greenwich. Fancy taking on a race for Retina UK in 2025? We’d love to hear from you.

Support for you

As a part of Team Retina UK you’ll get:

  • Help and guidance from a dedicated member of our Fundraising team
  • Access to a range of materials to help with your fundraising – including sponsor forms, collection tins, pin badges and more
  • A Retina UK running vest
  • Invitation to join our Strava running club where you can chat with other Retina UK runners, sharing tips and advice
  • Finisher t-shirt and medal from the race organisers.

Charity place

Secure your place in the race with a £35 registration fee and pledge to raise £500 for Retina UK.

Register now
“Retina UK gave me the best support after my diagnosis. The support, patience, empathy, kindness and understanding I received from helpline staff is one of the main reasons I came to terms with my diagnosis.”
A community member.

Own place

If you've already secured your own place, we’d love for you to join our team.

Email us

Any questions?

If you’d like more information on joining our team, please contact our Fundraising team on 01280 821334 or email Fundraising@RetinaUK.org.uk.

The Big Half 2025

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Terms and conditions

By accepting a charity place from Retina UK I agree that:
I do not wish to receive communications from Retina UK:
If you already hear from us, we will continue to contact you in the same way. If you don’t already hear from us, we’d like to send you information in the post and/or over the telephone about events, research, fundraising, appeals and our regular newsletters & updates.
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If you would like to change the way you hear from us, how we use your information or do not want to receive and further communications from us, just email info@RetinaUK.org.uk, call 01280 821334 or write to us at Retina UK, Whiteleaf Business Centre, 11 Little Balmer, Buckingham MK18 1TF.

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