I'm running it as well.
Got a slight pain in my heel, which I hope doesn't hinder me too much.
Done the Glasgow Half Marathon 3 times. 1.37 in 1999, 2.05 in 2006 and 2.10 in 2007. So I'm hoping for a sub 2 hours time.
Training so far indicates a sub 2 hour time, but it is all about the pace you set in the first few miles and it is sometimes hard to judge.