A large group of marathon runners is participating in a road race. The image shows their training and them wearing number bibs.

Multiple charity slots still up for grabs at this year’s Big Half!

We have multiple slots available at the Big Half in London this year for runners wanting to make a difference and raise vital funds for sight-saving research! Register your interest to run for Sight Research UK before midnight on Monday 2 March 2026 for the chance to be selected.


Group of marathon runners participating in a road race, wearing numbered bibs, running through a city street with historic buildings in the background.

How do I secure a charity slot?

Already have a place at the Big Half?

You can still fundraise for Sight Research UK if you’ve secured a general entry slot at the Big Half. There’s no entry fee and no fundraising goal if you would like to support sight-saving research as a non-charity entrant.

Just let us know so we can support you along your fundraising journey by emailing hello@sightresearchuk.org.

If you want to stay in the loop about future events (like the Big Half) where you can make a difference, sign up to our newsletter:

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