You can definitely go out too hard in a 5K, it isn't a 400, 800, or 1600M effort, but if you aren't hurting and questioning your life choices the last mile you

You can definitely go out too hard in a 5K, it isn't a 400, 800, or 1600M effort, but if you aren't hurting and questioning your life choices the last mile you weren't going hard enough :)