I'm a female living in Chicago and I have been bike commuting for the past month and have really been enjoying it. I bought a commuter bike (Raleigh Detour 3.5) and am now using it as my primary means of transportation as my car is no longer reliable. This past week, I commuted ~100 miles to and from work. It is a little over 20 miles each way and I typically take the train to divide up my journey. Some days, I bike the entire 20 miles home. I have surprised myself and others at how far I can travel. In heavy traffic, it takes me 1 hr and 30 minutes to arrive home by car, but by bike, I can make it in 1 hr and 42 mins. I hope to continue as long as I can into the winter and have found this forum to be extremely helpful. Thanks!