I just saw this interesting article in the New York Times suggesting that for middle aged people, the ability to run a mile at a certain speed might be just as good a marker for heart health as chloresterol, blood pressure, etc.
Remember that this is for forty year olds, so presumably if you're younger, you have to run faster. I'm just about to turn fifty, so I used the forty-year-old marks.
Very fit: For men: 8 minute mile, for women: 9 minute mile.
Moderately fit: For men: 9 minutes, for women: 10.30
Low fitness: For men > 10 minutes for women >12 minutes
I tried it last night, and I can run a 10.30 minute mile, but not a 9 minute mile, although I slacked off exercise for a couple of months and have only been back to my normal routine for a couple of weeks.
Still, fairly happy with "moderately fit" which decreases your risk of heart disease significantly. My mom had a heart attack at age 62, and 18 months ago when I started running, I could not run 3 straight minutes at a pace of 4.5!
http://well.blogs.nytimes.com/2011/0...-heart-health/