In reply to dread-i:
> >What's the target after 1000km!
> What are your aims? Do you race? If not, enter some races.
> Unless your target is just to keep fit and burn off the pies, then train for something. The distance will build up as a byproduct of that.
Not everyone is into racing, (I associate it with PE at school and bullying by teachers and other kids if you weren't quick enough). Joining a running club is a good motivator to get out once week though, as are parkruns.
OP: Just looked at my Strava profile. 995k this year as a not particularly motivated or high mileage runner, so you should be fi e with a 1000k target.
As others have said, you just need to take it steady. Also don't try and increase speed and distance at the same time, do dedicated speed work sessions if you want to get faster, rather than combining it in a long run.
Above all, enjoy it.