My current commute is 17 miles long. It's really just too long for me. I've tried riding it several times, but I always give up after a few weeks, because it just takes too much time every day. But, I got a new job, and a new apartment, so come January, I'll have a whole new commute.
Here's a link:
my new commute
It's 1/3 the length of my current commute, and there's no fast freeway option for me to use if I take my car, plus, trying to find a parking space at work would take just as long as it would to drive over there.
I think I'll be able to do this commute every day. I'm looking forward to it, I feel like I've been getting out of shape since I haven't been riding very much with the cold weather and my busy schedule lately.