My Commute varies - I work in a lot of different schools throughout the week. The furthest single drive is almost 60 miles which can take up to two hours if the traffic is really bad. The shortest is just a smidge over 25 minutes.
But I do a lot of driving during the day as well, e.g. on Thursdays, I'm in Andover, then Basingstoke, then Newbury, doing an hour and a half at each site.
All in all, I do about 500 miles a week for work, which works out at a bit over £70 fuel every week, multiplied over the school year should be about £3000 (not including personal mileage).