It's hard to work out exactly what the paces per mile would have worked out at if you'd followed the 7.30 MP, and 7.10 HMP to the letter, but if you think roughly speaking that each 2mile section would have had a full mile at MP, and a full mile at HMP, that'd make it 14:40 per 2mile spell.
(not entirely a perfect reading, as clearly you'd cover more than 1mile of the 2miles at HMP, due to it being a faster pace than MP..but it's the best we can do without loads of calculations!)
Therefore, let's make it roughly 14.30 per 2mile section...
You came out 14.30, 14.00,14.15, so as much as 30secs quicker than target pace!
Therefore, you were definitely working very hard in the middle to end sections.
On race day it will 100% be much easier.
Put it this way, in training if I was told 4miles straight at Half marathon pace, i'd find that very hard. You've done 5miles comfortably at or above 7.10 pace in training on your own.
To hit 1:34:59 you need 7.15 miling, and it looks like 7.10 will be your minimum target pace to go for.
The 10k on Wednesday will give us another clue, but I see you as being nicely on course.
Edited: 02/09/2012 at 14:39