I forgot how much fun track workouts can be, especially 400s. You get to run fast, and it feels amazing...then right when you feel like you're going to die, you get to stop!
My mile wasn't great - 6:34, but I can't really complain. My 400s were a little better: 1:32, 1:30, 1:30, and 1:28. I walked 100m in between each.
I'll be back at the track next week for some 800s, and I'm honestly looking forward to it. I am dying to PR in the 5K sometime this summer, so I'm prepared to work my bum off in order to do so.