For a truly talented kid (physical, mental, and emotional) low miles allow them to delay intense training and potentially extend their career through college and beyond. However, for a kid of average ability higher mileage can allow them to achieve at the highest level in high school. Some of these kids just don't have the tools to compete at the highest levels of NCAA DI competition. Plus many of them have other interests in college and they may not even try. While higher mileage when in high school may lead to a shorter career for some, it may also be the only path to glory for some.
If I remember correctly, Joe Newton's philosophy is that he wants the best out of his runners now since they may never run a step as part of a team once they leave his program. I don't agree with that approach for all. I have left several truly talented kids undertrained but prepared for DI athletics, while my own history was one of much higher mileage in high school that allowed me to barely make varsity in the Big 10. If I had tried to "save my legs" with lower mileage in high school, I never would have had the opportunity to compete where I went to college.
I believe it's best to take each kid along with their situation and goals independently to determine appropriate mileage. Don't try to fit every peg regardless of shape into your preconceived round hole.
If I remember correctly, Joe Newton's philosophy is that he wants the best out of his runners now since they may never run a step as part of a team once they leave his program. I don't agree with that approach for all. I have left several truly talented kids undertrained but prepared for DI athletics, while my own history was one of much higher mileage in high school that allowed me to barely make varsity in the Big 10. If I had tried to "save my legs" with lower mileage in high school, I never would have had the opportunity to compete where I went to college.
I believe it's best to take each kid along with their situation and goals independently to determine appropriate mileage. Don't try to fit every peg regardless of shape into your preconceived round hole.