In theory yes. There is something like 105% or 110% total story to be had in the game, so you probably wouldn't see 100% in your completion until you are like in the Farplane Glen. Also, if you are wanting to get the perfect ending you have to get 100% and the criteria for the good ending, don't forget that.
What's the criteria for the good ending?
Edit - Never mind I saw it in your other thread. Well I'm using a checklist so hopefully I'll get the PERFECT ending. If not I'm going to kill myself =(