How fast can the average man run the mile?

Men at the gym typically have their treadmill set to about 7 miles per hour, or 8:30 minutes per mile. They can probably run faster if they try, maybe 8.5 miles per hour if they pushed it. Very few gymrats can run 9 miles per hour, 10 miles per hour is much harder.

The gymrats are usually in better shape than average couch potato: the average man probably can't run a mile at all, or possibly an 11-12 minute mile.

Olympic runners can do < 4:00 minute miles. Champion marathon runners do 4:45 minute miles. A very good, but not professional, marathon runner can do a mile in 5-6 minutes. A good time for a recreational runner in a marathon is 4 hours, which is 9+ minute miles.

30% of the US is obese (30+ pounds overweight) . 200,000+ people a year are so overweight that they have surgery to shrink their stomachs. Like those people on "The Biggest Loser", almost none of them can run a mile. Walking a mile takes 20-30 minutes. Some people can't even do that.