Title says it all really - I am well chuffed :-). It took slightly longer at about 40 minutes but that is fine.
I am really chuffed at how sustainable it was, at no point was I gasping for breath - it was challenging, sure, but sustainable is a good description I think.
I read a post recently about 'we achieve what we expect to - expect a 3K and after 3K you will be tired, expect a 4K and after 4K you will be tired etc.', and this certainly seems to be consistent with that. During week 9 I ran for 30 minutes (~4K) and then felt I needed to stop. No way could I have done 5K then.
Now, a couple of days later - the second 5K baby!
So - try not running for a given duration, just go slow and see how far you can go :-).