Slow long run - Ran the last 20miles of the marathon course. Started at the kids bedtime so this meant running round Canary Wharf/Isle of Dogs at 10pm which was a bit bleak. I'm not sure exactly how far; somewhere between 32 and 35km. I was out for 3h30 and there were a couple of stops for "full fat" coke. I'd have liked to do 5.30min/Km pace but settled for the 6min/km that my legs wanted to do. Fairly comfortable, just a bit of right leg wanting to cross the midline which I think is the annoying TFL/ITB up to its usual tricks.