Steve Scott (the guy who ran 136 sub-4's and has the AR at 3:47.69) writes:
"Back then, California high schools turned out droves of great distancemen, but few of them continued their success in college; most kids were burnt out from excessive running before they could possibly reach their potential. In high school, they trained upwards of 15 miles a day, wringing every ounce of strength from their young legs. Coaches, seduced by the high milage that was given credence by professional marathon runners, either didn't know any better or didn't care.
I doubt I ever ran more than 40 miles a week at Upland (High School). Loney knew what was right and did not want to push his runners to their breaking points. I trace my longevity in this sport to not being a teenage phenom on the fast track from the get-go."
.....
"Thanks to Loney's good sense, my potential had barely been tapped. Musich, on the other hand, had trained 100 miles a week under the guidance of a coach who ran ultramarathons and was known for his running obsession. Musich's college running never amounted to anything whereas my legs were full of life."