At the moment it's about 28 boards and I'm not out of Derby yet.
I've decided to try and get as much of the scenery around Derby done before I continue laying more track.
@Euphod - Yes, I was very dissapointed by the LOD's on the Auran TS2009 track, whilst it looks good close up it's a terrible jump in detail, hence why I have changed the track to something better.
Also, as a side note, I'm currently in the process of changing all the Turnouts for Andi06's animated ones as they work well in TS2009.
Nathan