Warmup
2 Rounds not for time
400m Sandbag carry
10m Alternating lunge steps
20 Calf raises
10m Walking quad pull
20 Alternating leg glute bridge
10m walking toe touch
Workout
Run 8 x 400m
ODD minutes: Carry the sandbag
Even minutes: No sandbag
Rest 3 minutes between reps
Cool down
Stretch both calves and achillies for 2min.

and then