Travelling in the past few weeks in the Greater Manchester area, on the East Lancs Railway and on the Welsh Marches Line a couple of times adds 722 miles and 77 chains to my total, which is now:
4187 miles and 73 chains.
Probably my busiest year ever on the railways!

Though when I stop being a student and enter the "real world" I suspect my annual railway mileage is going to drop off (unless I commute on the train of course). Might get up to 4400 by the end of 2008.