I spend about 2 hours of every day on the train, and that's when I read the most. At least when some other commuter isn't annoying me.
At home I read during dinner, in front of the television (not just during commercials

), in the bathtub, while brushing my teeth, ...
Now that I have my reader (and the wheather is turning nasty here in Belgium so running outside is not an option anymore) I think I'm going to try the treadmill thing as well. Although I'll be terrified my reader will fall and break.