How much mileage is sufficient for a 400/800 runner at the high school level? I understand that alot depends on whether the athlete is more speed based vs. endurance based, but is there a relative formula for making the determination? As a high school coach with a sprint background, I am constantly battling coaches who don't do speed work until the week of the state meet, have kids run 40+ miles per week whether they run the 400 or the 2 mile or don't know what speed is at all. I don't know how many times I've explained that 150s and 200s don't constitute true speed work. I tend to focus more on general conditioning than mileage since high school kids have such poor posture, they can't keep their form no matter what approach to training you take. Thoughts?