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TCS London Marathon 2023

Feeling inspired by our fantastic #teamICR London Marathon runners?

Our amazing runners continue to take on the physical and virtual versions of the London Marathon ito raise vital funds for cancer research. 

You can be a part of #teamICR and take on the 2023 TCS London Marathon on 23 April 2023.  

Register your interest

Get inspired for 2023, see what past #teamICR runners have got up to:

Key Facts

Event Date
23 April 2023
Registration Fee
£50 (once your place is confirmed)
Minimum sponsorship amount
Deadline for applications

Join #teamICR

Join our #teamICR Facebook group to chat to other ICR fundraisers and get training tips and fundraising advice.

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

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.

Stay in touch

Get in touch with us on 020 7153 5307 or email

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We’re lucky to have fantastic supporters helping us make the discoveries that will defeat cancer. Read some of their stories below.

Inspirational young woman smashes target of raising £21K for the ICR before 21st birthday

A determined young woman from Southend-on-Sea has smashed her goal of raising £21,000 for cancer research before her 21st birthday this week.

Find out more

Abbie’s Army join #teamICR for the London Marathon

This year, a team of three runners will be taking on the London Marathon for Abbie’s Army to raise money for childhood brain tumour research at The Institute of Cancer Research.

Find out more

Joining #teamICR has motivated James through his training for the London Marathon

James Fuller will be running the Virgin Money London Marathon with his team mates in honour of his mother in law who passed away from ovarian cancer last June.

Find out more

Caroline trains for the London Marathon to regain her fitness following cancer treatment

Caroline Kingsbury-Margetts has donned her running shoes to raise money for cancer research and regain her fitness following treatment for cervical cancer.

Find out more