jwmacleod67 - No, I've never ran around Mighty Hill Road or Huston Road, the section of Route 114 that I run is Dingley Spring and Spiler Road (Route 35 end of 114). However, funny you mentioned Mighty Hill and Huston roads because my wife has recommended me to head down Buck Road and then onto Huston Road, but....
As for deciding on the half mary in October, there's no rush. I would say to keep doing what your doing now and add on mileage slowly (remember the 10% rule!!). To get in adequate/serious training, you would probably need to decide by early/mid June. That would give you about 18 weeks to train, which is about the length of some marathon programs.
Good luck and happy running.
[edited to say early/mid June]
[http://This message has been edited by elufa (edited Mar-05-2004).|http://This message has been edited by elufa (edited Mar-05-2004).]