I started running a few months ago. I'm running 15k a week - mostly 5k distances (5k PB is 28 mins). I've run one 10k and did it in 1hr 2mins. I'll be doing another 10k in September and maybe another in October.
I've just spotted a half marathon in late November that is around one of my favourite places. If anything can keep me going through a HM, it will be that scenery.
The question is, would it be too much too soon?