Velocitie averages

Here are some averages. I'd say the degree of

variation is 3-8 mph +/- for younger kids

and 5-12 mph for older kids.

8 yo: 40 mph

9 yo: 43 mph

10 yo: 46 mph

11 yo: 48 mph

12 yo: 50 mph

13 yo: 54 mph

14 yo: 60 mph

15 yo: 65 mph

16 yo: 70 mph

17 yo: 76 mph