It's been a week since my injury. Well, ten days since the onset, but a week since I really started feeling pain after running seven miles. I tried to run for 15 minutes last night. It hurt. I couldn't keep running.
The sports injury doctor's diagnosis - Piriformis Syndrome. AKA A Pain in the Bum. Basically my piriformis muscle is swelling and compressing my sciatic nerves and causing all sorts of issues.
I don't really have much else to say. Looks like both the marathon and the 50 miler are both out, despite all the training I put in through the winter. If I can't run a mile now without pain, I don't think I'm going to be able to do 26.2 in seven days.