Back Squat:
L3: Heavy Single then 3x3 @ 87%
L1 & L2:
5 @ 68% of 90%
5 @ 78% of 90%
5 @ 88% of 90%

L3:
Run 100m on the minute, every minute for 4 minutes.
Rest 2 Minutes
Run 100m on the minute, every minute for 4 minutes.

L2:
Run 75m on the minute, every minute for 4 minutes.
Rest 2 Minutes
Run 75m on the minute, every minute for 4 minutes.

L1:
Run 50m on the minute, every minute for 4 minutes.
Rest 2 Minutes
Run 50m on the minute, every minute for 4 minutes.