Paralympic gold medallist Richard Whitehead has revealed that he is aiming to raise £1m for charity through a marathon challenge.
The T42 200m Paralympic and world champion will run 40 marathons in 40 days from John O'Groats to Land's End in aid of disability charity Scope.
The 37-year-old told BBC Sport: "It's a personal challenge but I'm also getting out into local communities providing hope and opportunity for people up and down Great Britain.
"The message is, life need not have limits. Having an opportunity in life is important but what defines you is what you do with that opportunity. I'm not saying people have to run a thousand miles to be seen as successful, or run a marathon or win a Paralympic gold medal. But opportunities are out there, however big or small.
"It's your chance to witness that the power of sport is open to anybody in Great Britain, whatever the community or background you're from, whether you're able-bodied or disabled."
In 2010, Whitehead broke the marathon world record for an athlete with lower-limb amputations, completing the Chicago marathon in 2:42.52.