I went during my lunch hour today and rode the bike at the City of Aurora workout gym. I went about 50:00 min total. I also went about 12 miles total. The stationary bikes only allow 30 min + 5 min cool down. I had to stop and start back up again. Not much you can do, but it's so much better than going out in 27 degree weather! Brrrr. thats too cold!!