Thoughts about treadmills?
While I love walking outdoors, there are only a couple of walking trails where I live and they are only half a mile. All roads outside of my small neighborhood (one mile walk with almost no shade) are two-lane highways. So most of my walking is done on the treadmill at the Y.
I can watch television, play with the speed and incline, program in my stats to get a relative close assessment as to how many calories I've burned, and can check my heart rate. But I would much rather what I had where I used to live: A two-mile track with every quarter mile marked that opened at 5:00 am with plenty of other people there. The only decent trail in a park here doesn't open until 8:00 am, sigh!