The challenge has been backed by Bradley Lowery Foundation patron and Dragon’s Den investor, Sara Davies, who recorded a personal video for the launch.

The “6K in 6 days” challenge, which begins on 1 May, is open to all ages and capabilities. Participants are asked to walk, run or wheel six kilometres in one day or spread the distance out over six days, raising £20 or more for the charity.

Those who hit the target will receive a commemorative medal and will be encouraged to nominate three friends to take up the gauntlet. The 6k can be completed as part of an individual’s daily exercise or done within the home or garden. “6k in 6 days” vests and t shirts will also be available from the charity’s website for £5.

Since it was founded, the Bradley Lowery Foundation has raised more than £3million for dozens of poorly children; established a dedicated support line for the families of children with cancer; donated over £200Ks to researching childhood cancers and campaigned for new drugs to be introduced in the UK.

Gemma Lowery, founder and chief executive of the Bradley Lowery Foundation, said: “The last few weeks have been incredibly difficult for everyone, and we know that people are looking for exciting new challenges to get them up and moving when they’ve got cabin fever.

“Brad’s love of sport and activity was such a huge part of his life, so we hope that 6K in 6 days will light that fire inside others who need the motivation to get going. It’s not a long distance and it’s an easily achievable fundraising target for all ages, so we hope it will be manageable from the toddlers to the Captain Toms. We want to get people moving for a great cause. Will you take up the challenge?”