Ok, I'm back! It ended up being a total of 90 miles. 87 miles round the course and 1.5 either way to the car park.
The last 22 miles were a bit of a killer, partly because some lying git told us the course was 82 miles, not 87, so the final 5 miles were somewhat unexpected.
My nutrition worked out fine, although I gave in to the carbs (needs must) and I didn't need half the food I had brought.
B: Smoked salmon and scrambled egg
Sn @ 25 miles: Banana, handful of macadamias and 1 fly
L @ 46 miles: Vegetable soup, macadamias, finger of cheese
Sn @ 65 miles: Energy wine gum things
Sn @ 82 miles: crunchy peanut butter bar, and some silent, salty tears (did I mention the lies?)
Finish: More macadamias and some cava
I had predicted it would take 7 1/2 hours, including stops, and I came in at 7hrs 20 minutes - average 15 mph.
Pretty pleased with myself, although I'm sure my bum looks like a baboon's!