Build the engine! Workout

200m run at easy pace
100m sprint
400m run at easy pace
100m sprint
600m run at easy pace
100m sprint
800m run at easy pace
100m sprint
1000m run at easy pace
100m sprint
800m run at easy pace
100m sprint
600m run at easy pace
100m sprint
400m run at easy pace
100m sprint
200m run at easy pace
100m sprint
Total: 5900m