3,513km. That's the length of the Great Wall of China. And I'm about to cycle and run that far.

So here's the plan. Over the next few months I'm taking on a pretty ridiculous challenge: covering 3,513km on foot and on the bike, all in aid of Headstart, who use football to support people's mental health and wellbeing.

I don't think I need to explain why this matters. Most of us know someone, maybe ourselves, who's struggled and not known where to turn. Headstart uses something as simple as football to get people talking, build connections, and make sure people aren't dealing with it on their own.

My legs are going to hate me for this one, but it's for a good cause, so I'll take it. Every bit you can chip in helps keep this kind of support going, whether that's a fiver or whatever you can spare.

Thanks for reading, and thanks even more if you can help me get to the finish line (literally).