We have an 11 yr old kid in our neighborhood who weighs over 200 lbs. His 12 yr old brother is just over 100 lbs. Both parents are normal. This kid can run like any other kid, but he could be a real threat to any pee wee football player.
Funny you mention peewee football. The 205 pound kid I knew was prohibited from playing because of his weight. He missed the maximum weight by 5 pounds. He did play goalie in hockey though.