My son and his girlfriend took part in the 2012 Grim Challenge a week ago. It's billed as the filthiest thing you'll ever run through and I suspect it was pretty cold too!
They finished the course in 1hour 50minutes and were not the last. I think I should point out that not all that long ago Annie took part in the London-Brighton Run and although she didn't finish she covered 96kms. SERIOUSLY mad!!
Congratulations to them both.