Off-road marathon - How about Beachy Head? Some years it can be done on consecutive days with Snowdonia and Dublin.
Harry probably clashes with 3 peaks but Lochaber Mara is a good fast flat course i have a pb Of 3-40, on that particular course you can check the times and dates here :-
http://www.lochaberac.co.uk/newpages...athon2005.html
It is a superb well organised race with the bonus of being in Fort Bill allowing the oppurtinity for a run up the Ben to shift the lactic acid from the legs on the monday .
The older I get the Faster I was
The older I get the Faster I was