The average 62 year old can not run a mile. If you can run it at all, your doing something right! Keep at it!
An average of 15 mph.
A 23-year old man should be able to run a mile is about 8 minutes. Most people should be able to walk a mile in about 20 minutes.
I run a mile between 7 minutes to 8.
At 71 I walk a mile 14 min 17 sec and run a mile 11min 55 sec.