On those days when I don't feel like getting cold or wet or just don't have time to ride in the daylight I use my trusty indoor trainer. I actually like the thing. It's great for lots of different training exercises but the problem is it just gets so BLOODY BORING after anywhere from 30 minutes to 60 minutes. The longest I have been able to do is about 100 minutes at one time for low intensity endurance training. At least I have Olympics to watch these days and it is inspiring to ride while watching the Canadian Women's Hockey Team kick A**.
How long do you usually use your trainer/roller at a time and how do you pass that time?