My previous commute was between 2 and 2.5 hours ONE WAY. I had averaged around 4 hours of commuting per day, I was miserable to say the least. I am not a good commuter person. The sad part is it was under 100 miles round trip. So Cal traffic bites!
I am very fortunate to be working many times closer than that now. I can be at this new job in the same time it took just to get to the freeway entrance for my last job. But I have to work around 30-40% more. =S
Edit:
I should probably mention that on a few occasions the commute was over 5 hours total. But my longest commute mileage wise was just under 200, around 180 something, that was when I was working 3 jobs a day. Oddly I lucked out and the commute didn't take proportionally as long, LoL, figures. =S