I am 1 year veteran in PM role so I can say in quite similar position as you are. I will not give you any experienced advice, but just to share my perspective of what I am trying to achieve, learn, how to progress, etc.
First and I think most important, before any thinking about what after two or ten years, is to stay focused on simply made my projects successful! If I don't make my first couple of projects successful I will not have any chance to have other projects. And I don't want to say that plan for future move and direction of carries is not important, but I think in first year or two, this is just the other think, not the most important one.
While 'taking care' of point one, I am trying to learn as much of new things as possible. It means if there is some project, activity or anything that you have not done before, just take it. And there is a lot of them, which are boring and unpleasant for senior PMs, so you can get them for free. I am sure that at 90% these will be boring and unpleasant for you too, but you will hopefully learn a lot from them.
After some time - for somebody it could be one year, for somebody else 5 years - you get into daily routine in PM and just before this happens, it's a time to think about some move. I intentionally wrote 'just before this happens' as I think everybody has some instincts that say it to yourself before it actually happens. Where to move its completely upon your preferences. Some of the possible moves as I see them are as follows: director or site leader, product manager, PM in different area or of course back to position before you have become PM :) I hope that the last item will not happen to you...