Nothing in particular was injured, but every element in my lower leg was sore. Every step of a very slow two miles was painful. I guess I learned my lesson. Some weird pains have been cropping up in my knees and hip, so that coupled with my obviously over-used calf muscles means I'm going to take a cross-training break for the next few days to let this die down. Biking and swimming would be good for me right now, and after about two months of nearly uninterrupted running at rapidly increasing speeds a rest is probably past due.
P.S. I had to throw this in here: