Notes
400, 800, 1600, 3200 w/ half distance for rest
(73, 2:27, 5:07, 10:44).
This was exactly what I wanted the workout to be. Well sort of. I had planned on going back down at the end (16, 8, 4), but my achilles was hurting so I backed off.
It was beautiful doing this workout at night. On my last interval the lights over the soccer field got turned off and the sky was brilliant.