Im currently in base for track in highschool, im running 70mpw, on top of Monday 6x100m strides and Tuesday which is a 4 mile tempo at 5:50 pace, (it's really slow right now because im running on snow, so usually my tempo pace is around 5:20 to 5:30.) Thursday is 6-8xhill sprints, Friday interval workout, occasional 1000m, 400m, 200m or 800m repeats every now and then to mix up. (not to taxing yet because it's still base) lastly my longrun which averages 6:50 for 15 miles and feels like im cruising so not too taxing.
I did a time trial 4 weeks ago and got 4:40
My goal is to hit a 4:20 by the end of the season, i have not started the grueling workouts yet because it's still base but my question is am i training as hard as i should be right now if i really want to drop 20 seconds off the mile?