So I went running while Edmund napped to burn a little stress and get a bit more energy. I did a 2 mile run and ran as fast as I possibly could. My time: 14 minutes and 59 seconds.
I will say I prefer long distance to speed work. However, there is something sorta nice about just losing yourself in the struggle of burning lungs and muscles and not being able to think about anything but the next step. Emphasis on sorta.