(first post ever on RW here, btw)
I'm down for the Readin HM in March, which will be my second HM, the first one being reading two years ago, which was my first ever race (can't recall exactly what get me persuaded to try it now 
I seem to be progressing okay so far, on week 6 of training for it, and a lot more structured than the last time. When I did reading last, I had no idea of training plans, so just did runs of various lengths, all at roughly the same speed, with my "speedwork" being indoors sports I was still doing. Was quite happy to get around in 1.50, but my legs were stiff for a while the next few days
Now with following a training plans, and more milage the last time, I'm hoping to improve the time, but not sure how much I should be realisticly be aiming to chop off, I'm aiming for 1.40, which I think is atainable, time will tell. Am following the sub 140 training scheule so far, so have two 12 milers under my belt that last two weekends, it was quite good to be able to finish a 12 mile run at about the same pace as my original HM without the legs feeling totally burnt out.
Am still new enough to running to find it hard ot grasp how much difference 5 minutes makes, years ago I would have heard 1.40/1.45/1.50 for a HM and thought they were much the same time, but now it's starting to sink in what differnece these minutes can make! Just hope that I haven't underestimated the jump from 1.50 to 1.40, even if this time aroundI'm training a lot better.
M.