Paralympic sprint champion and double leg amputee Richard Whitehead has spoken about the difficulty of running 40 marathons in 40 days.
It is the hardest thing I have ever done. It is massive.
To run a marathon every day for 40 days obviously is going to be tough. I am a mentally strong person and I am physically able to do a marathon - hopefully I will be able to replicate that with the support of my team.
This is about giving up my time to hopefully open up opportunities for other people. I am good at running and hopefully I can inspire other people by doing something that I am good at.