For our 1500m workouts we do a lot of pace work. We set a goal 1500m then do most of our workouts at that pace to get used to it. This past week we did 3x(2×300). We did the 300s at our 1500 pace recovered for 45sec between 300s and then 4 minutes between sets. Previously we did things like 12×200 at race pace with an equal recovery. We typically do 1 1500m workout a week and don’t start them till spring break. I won’t let the volume get above 2400m because at that point I feel that the workout becomes more aerobic than needed for the race.