How do you train for a half marathon in Minnesota?

I am wondering how people manage to train for a marathon while living in Minnesota. I can't run outside when it's cold and I can only manage about 45 minutes of running on the treadmill. I absolutely love running outside and wish I lived in a warmer climate, but any suggestions for training for a half marathon given my limitations?|||Check area colleges and the ymca for indoor tracks. I work at a college in Illinois and we have 1/8 mile track. Otherwise, most of your training is on a treadmill. Good luck!|||the people I know use a treadmill in the winter, I don't see anyone running outside in that temperature.