Bumper plate madness

For time:

Run, 400 m
25 Weighted Sit Ups, 25/15 lbs
25 Pull-ups
Run, 200 m
25 Weighted Sit Ups
25 Overhead Walking Lunges, 25/15 lbs
Run, 200 m
25 Weighted Sit Ups
25 Overhead Walking Lunges
Run, 400 m
25 Weighted Sit Ups
25 Pull-ups