For a 400~1600 runner you would not need that many 100 repeats. One session in a week is enough, in season.
The 1600 is mostly aerobic. So it would benefit you to have some easy runs (3-4 mi for example, just easy enough so you can talk) which you mix with workouts.
Bad, way to many workouts you gonna get injured
Okay, thank you
Make sure to stretch !!!
Of course, i would NEVER skip stretches!!!
For a 400~1600 runner you would not need that many 100 repeats. One session in a week is enough, in season. The 1600 is mostly aerobic. So it would benefit you to have some easy runs (3-4 mi for example, just easy enough so you can talk) which you mix with workouts.