Notes
I'm guessing on how long the workout actually took because I kept my watch running between reps to see how long we could rest. But my legs felt pretty good and the workout didn't feel all that difficult so I felt pretty confident after the workout. My legs just started feeling tired the last rep or two.
4x400: 71, 73, 73, 73
5 minute rest
3x400: 72, 72, 71