What's 26 miles? I really want a foil cape.

Shit. Well I've agreed to do it now so the least you can do is sponsor me. I'm raising funds for Scope - look left to see what they do. The race is just four days before my 30th birthday so think of it as a little gift.

Donating through this site is simple, fast and totally secure. It is also the most efficient way to sponsor me: Scope will receive your money faster and, if you are a UK taxpayer, an extra 28% in tax will be added to your gift at no cost to you.

Best of all, this is the last time I'll ask you to pur your hand in your pocket because I am never, ever doing this again.