My main fitness goal at the moment is to quit smoking.
But I feel enough pithy comments have been made. I actually took up jogging again recently after over a year and a half. I've done a few 5km-ish runs at night, and discovered the joys of night running; the calm, the stars, the darkness - though the latter can bring on paranoid visions of a serial killer jumping out of the bushes.
Actually I think one of the problems I've had with jogging is a total lack of goals beyond "keep jogging, maybe a little more next time". A marathon is a bit too far out for me right now, but running a 20k would be a good place to try to get too.
Congrats on meeting, and exceeding, your goal!