Man running through London

Royal Parks Half Marathon

A hugely popular half marathon through four of London's beautiful Royal Parks.

Everything you need to get started

Location: London
Event date: 12/10/25
Register by: 31/08/25
Registration fee: £30
Min. sponsorship: £365

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Are you ready to take on one of London's most famous half marathons? With closed roads and a chance to take in four of the capital's famous parks? Help us reach the finishing line. Let’s finish cancer together.

Take part in the Royal Parks Half Marathon, Britain’s most beautiful city run, and help us transform the future of cancer treatment. Join #teamICR today.


Why join #teamICR?

The vital funds that you raise by running with #teamICR will help us deliver our innovative programme of cancer research. Together we can reach the finishing line.

As part of #teamICR, you will receive:

An ICR running vest or technical t-shirt

A fundraising pack with tips on reaching your target

Advice on training, nutrition and health

ICR branded materials to support your fundraising

Support from our dedicated events team throughout your training

Lively and enthusiastic encouragement from our cheer squad on the day

Start fundraising

Download our fundraising pack


Stay in touch

Get in touch with us on 020 3437 6388 or email [email protected].

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Find out more about how our appeals for cancer research help patients live well with cancer.