Schmid - I guarantee it won't rain hard for a considerable time - I bought a waterproof jacket yesterday.
JPF1 - I think you only really appreciate the 3Plus2 schedule when you start to carry a niggle - just think how quickly this would become an injury on a 6 day a week running schedule? Better to train for 18 weeks on 38 quality miles a week than 60 miles of averageness for 12 weeks with a gap - and remember an injury takes you back 2 days for every 1 off! So keep those knees well and enjoy....
Astride - my 20 miler is in 2 weeks - I'm following an 18 week schedule which is last years Furman approach - slightly different to the book schedule. In this schedule you build 13, 15, 17, 18 and 20 which feels more steady progress than in the 16 weeker.
I think I ran my 17 miler a bit too quick last weekend +39 secs to PMP (rather than 45-60 sec). My right ankle is stiffer than normal and hasn't properly recovered with Xtrain and recovery run on Mon and Tues. That'll teach me to move away from the schedule direction. My 18 miler this weekend will be much more conservative.
I ran my 3m tempo at 06:35 this morning and still hit the tempo pace - I seem to be getting used to early morning exercise. Marathon commitment.