25 miles each way for me. and of course since I work near o'hare, the traffic is pretty much awful all the time.
luckily I only have to come in the office 4 times a week, so I drive 2 days, and I take the train/bus two days. when I drive it takes like 1 hour and 10 minutes each way. when I take the train/bus, it takes like 90 min each way. of course, when I take public transportation, I can read or sleep if I want, so thats cool.