[wludavid]

Rick - I think you're right. Lots of good trails around here. I once broke my nose on a trail in Annandale. It wasn't a hobbling injury, but it was my first adult experience with shock, and I could have been in serious trouble if it were colder and I didn't have a group with me.

Moses, while I agree that low impact is better, there is no reason why you can't mix it up. Trail running or treadmills are a good way to exercise different muscle groups involved in running while minimizing impact. Good shoes and staying asphalt helps where there are no good trails. Also, not running everyday and listening to your body when it trying to tell you its hurt is important too.