Jac don't worry about it you are allowed an easy week to recharge the batteries after all the nasty stuff you were doing for the last few weeks. Ceres on a school night, a half marathon in the sunshine and a monster 3h effort at the weekend all catch up on you eventually. Just running knackered all the time certainly doesn't increase your motivation. Not long until you are off to see Nessie
where you should put the rock in rock ness you have been doing fab recently 

If I were you I would leave the Great Edinburgh Run a miss. Not because it is a bad race although I haven't done it for a while. More because it is only a week after you have been to see Nessie. You will be amazed how much only 6 extra miles compared to a long run will destroy your legs and how heavy they will feel for a couple of weeks after the marathon. The only time I run that soon to a marathon is when I really have to get a bad race out of my system and stop me slumping into the "I give up completely feelings" I have slipped into from time to time. The course has changed a bit over the years I think but the run up queens drive isn't much fun on bouncy legs never mind knackered ones. I'd save yourself for Giffordtown if it is not too much of an anticlimax after Loch Ness its only 5k, a week later and pancake flat. Or you could just enjoy some long lies and vino for a couple of weeks. 
Not really sure where that 2:20 came from on saturday night jac and wouldn't bank on me having another one like that again any time soon, Its unusual that I get a run like that once a year and thats 2 of them I've had now when everything just felt good. I have to say I am looking forward to Munich as I really want to run round the track of the olympic stadium to finish and the race village is actually in the middle of the field. I will actually get on the pitch of the Olympic stadium. Just a shame I have to run 26 miles for the priveledge I could settle for 0.2 miles and a kick-about. Its not a massive race compared to some I've run but I have been obsessed with this stadium since watching the euro champ finals in 1988 and van basten scoring THAT goal in the final against the USSR I really can't resist the chance to go myself. 
10 year old schoolboy football in the street fantasies that haven't gone away over the years followed by a trip to disneyland in january. Does anybody think I should maybe grow up a bit??? 