About this event

Postponement update

London Marathon Events announced on Friday 26 February 2021, that The Vitality Big Half will be postponed to Sunday 22 August 2021. The event was originally scheduled to take place on Sunday 25 April.

Hugh Brasher, Event Director, said: “Following the government announcement of the planned roadmap out of lockdown on Monday 22 February, it was clear it is not possible to deliver a socially distanced The Vitality Big Half as planned on Sunday 25 April and the event will now go ahead on Sunday 22 August.”

To read the full statement, click here.

Children with Cancer UK will not have any Charity Places in the 2021 event. If you currently have a Charity Place, please email us at  sports@childrenwithcancer.org.uk to find out what your options are.

If you would like to join our 2022 team, please email us at sports@childrenwithcancer.org.uk and we will add you to our enquiry list and will be in touch with further information when it is available.

We are welcoming everyone who holds their Own Place, which has been secured via the Vitality Big Half organisers to run on behalf of Children with Cancer UK. If you would like to join our team, using your own place, please complete the Own Place registration form below.

What to expect from Children with Cancer UK

When you join our team, using the place you have secured via the organisers, you will receive the following support from us;

Regular emails including fundraising support, important event day information alongside how your wonderful support his helping our vital work.

Location & Date

  • London
  • August 22, 2021

Contact Details


How to sign up

Charity place

Children with Cancer UK will not have any Charity Places in the 2021 event. If you currently have a Charity Place, please email us at  sports@childrenwithcancer.org.uk to find out what your options are.

If you would like to join our 2022 team, please email us at sports@childrenwithcancer.org.uk and we will add you to our enquiry list and will be in touch with further information when it is available.

Own place

If you have secured your own place through the race organisers and would like to join our team, please complete the form below

fee: £0

Fundraising target: as much as possible

Registration forms

If you’d like to join our 2022 team as a charity place runner, please get in touch to show your interest.

If you have secured your own place through the race organisers and would like to join our team, please complete the form below

Registration fee: £0

Fundraising target: as much as possible

Vitality Big Half BIG21 - Own place

  • Date Format: DD slash MM slash YYYY
  • I am happy to be contacted by Children with Cancer UK regarding their challenge events, including the Vitality Big Half, as well as their charitable work. Please contact me by:

If you’d like to join our 2022 team as a charity place runner, please get in touch to show your interest.

If you have secured your own place through the race organisers and would like to join our team, please complete the form below

Registration fee: £0

Fundraising target: as much as possible

Vitality Big Half BIG21 - Own place

  • Date Format: DD slash MM slash YYYY
  • I am happy to be contacted by Children with Cancer UK regarding their challenge events, including the Vitality Big Half, as well as their charitable work. Please contact me by:

The Vitality Big Half 2020

Watch the race organiser’s official video for 2020 and don’t forget to sign up.

Vitality Big Half Gallery