I meant to post this link weeks ago, Jez is another North Face runner (like Lizzie Hawker), currently trying to set a record for the Te Araroa trail - 3000k length of New Zealand, a national trail that opened last year.
He's ccurrently on his first rest day (day 37) having covered nearly 2300k in that time, oh and he kayaked the cook straight and other sections!
Anyway, fascinating blog and a quite tremendous effort, just seeing what he eats is amazing. Have a look, he's doing well.
http://jezbragg.blogspot.co.uk/