When you have 100+ kids you can handle losing a few in a survival if the fittest system. If you have 7 you have to be careful and make sure everyone stays healthy.
All you guys talking about 90 mpw have you really done this kind of mileage? It is awfully hard, even more so for a 16-17 year old. That is 40 min in the morning and 70 at night every day all summer. Not many teenagers are doing this. Maybe saying they are but I'd say 1% in actuality.
That's fine for a guide line, but there is no one size fits all formula.
Forcing the casual 17:00 minute guy or your 800/1600 guy to run 60 might not be the best approach for them. Keeping a Chris Derrick at 60 if he is ready for 70 likewise is not the best.
I ran in the 1970's, there were plenty of guys running 80, 90, even some at 100. The key if don't give someone more than they can handle physically and psychologically, and back off when needed.
It really needs to be an individual approach.
Hey, Scott, is the 5k pace here goal or current pace?
Current.