My first one a week sunday, done 12.5 miles in 2hrs 15 about a month ago and really struggled with the last few miles. Rested up since having done max 10 mile long runs since and found them all much more enjoyable and legs feel quite fresh now.
Hoping for around 2 hrs 15 for the hm, but as others have said any finish is a PB and as I started out in Jan at 17 1/2 stone (not being able to run a mile!) and have shed 2 1/2 of them so far, I'll take what ever I achieve ... and then go and improve it!