I read through half this thread before giving up. 70% of the respondents are efffen' nuts. Crazy. Too many tupid people here who could be locked up. Seriously. Some of you are sick and should seek help.
Dad--ran the mile in HS, but never got his time. Probably sub 6. He was pretty big to be a runner, played line for JV football in college, and as an adult was 6' 180-190. He ran while I was growing up, first wave of jogging boom, and raced 4 miles at 28 min at age 50, post heart attack.
Mom--claims she was the best athlete in her class, but truthfully I never saw a lot athleticism, let alone running. Decent skier.Don't think she ever ran more than 30 yards as long as I can remember, and that was a shuffle. Slight build, though. 5'1" and maybe 105-110 when I was a kid.
Me, low-mid 15s for 5K but truthfully not very talented (but a good build, 5'10" 140); more just because I like to run and I worked at it.
My wife, good college runner. Sub 17 5K. Our kids: 17 yr old runs low 10s for 3200, 16:30 5K; 14 yr old runs under 5 for 1600.