This race was actually14.4m but i knew that before i entered!
Very tough going on muddy coast paths,sand and boggy moors but superb scenery and well organised. Shame about the price tag as more people would probably do it. Saying that there were probably over 500 people doing the 10k,half and full marathon.
I did it in 2:06:34 I was 20th out of 241 runners.
Definetely one for all you tarmac dodgers to try in the future.