Teams of 3:

Complete as fast as possible over the following intervals.
As hard as possible on each interval while still maintaining pace:

12x 6/4 cal sprint (4 each) – (72/48 cals total)

Rest 1 min and reset monitor

9x 8/6 cal sprint (3 each) – (72/54 cals total)

Rest 1 min and reset monitor

6x 12/10 cal sprint (2 each) – (72/60 cals total)

Rest 1 min and reset monitor

3x 18/16 cal sprint (1 each) – (54/48 cals total)

Rx plus

12 x 8/6 (96/72)
9x 12/10 (108/90)
6x 18/16 (108/96)
3x 26/24 (78/72)