The Big Half Marathon

Join over 16,000 other runners on Sunday 6 September for the Big Half 2026, a half marathon that takes place right in the heart of London.

About the event

This vibrant, inclusive half marathon celebrates the diversity of London and the communities of the four boroughs it passes through: Tower Hamlets, Southwark, Lewisham, and Greenwich.

Starting next to Tower Bridge, the route takes you along the river and on fast, flat roads to the iconic Cutty Sark in Greenwich. The event is well-known for its crowds and always draws a large amount of local support.

Who can take part?

The Big Half Marathon is a vibrant, inclusive half marathon which celebrates the diversity of London. The route is also wheelchair accessible, with accessible facilities (including toilets and refreshment stations) at the Start, Finish and Miles 3, 6, 9 and 11.

Anybody over the age of 18 is welcome to take part in the Big Half. We have limited spaces available, so come and join team Family Fund on Sunday 6 September 2026. To take part, you’ll need to commit to raising a minimum of £200 in sponsorship.

As a #TeamFamilyFund runner we’ll provide you with:

• a Family Fund t-shirt to wear with pride
• a fabulous fundraising pack full of goodies to help you reach your sponsorship goal
• first-class fundraising support from our dedicated team

For more information email our fundraising team or call 01904 550033.

Already got your place?

If you’ve already secured your place but still want to raise money for Family Fund, you can still join our team and receive all the benefits of being a #TeamFamilyFund runner. There’s no entry fee, and you can set your own fundraising target. Get in touch with our fundraising team today.

Feeling inspired?

We love to publish stories from our incredible fundraisers! From skydives to marathons and beyond, have a read of what our supporters have been up to on our News and Stories page.