I try to do at least one commute per week from home to work and that is 40km one way, approximately takes 2 to 2 1/2hours and around 2 3/4 hrs return as I take my time usually going home and the traffic is usually more crazy on the return trip.

I'm fortunate that I have showers at work so I can freshen up, otherwise I would be pretty ripe by noon. Even with that time interval I still get into work before some people that drive only 10km to work.

I also have to make a point of getting home early (before 9pm) on Friday's as some people have a tendancy to have a few drinks after work than drive home. Watch out for pay days also, people get real wierd than.