We can no longer cheer you on with bacon sarnies at the half a km mark - we've sold our place. To make it up to you, we've pledged £20. Break the record and we'll double that to £40. Get the BBC to discuss your attempt on the live coverage (with proof!!) and you'll get another £20. Down a half-yard of ale on the finish line and get another £40 on top. That's potentially £100... Good luck, from Simon, Kerry & Barney.
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