Walk at the beginning of the MOD portion if needed.RX500m mod400m fast400m mod300m fast300m mod200m fast200m mod100m fast100m mod3:00 restX 2Performance400m mod300m fast300m mod200m fast200m mod100m fast100m mod100m fast100m mod3:00 restX 2Fitness400m mod300m fast300m mod200m fast200m mod100m fast100m mod3:00 restX 2