Tendinitis of the anterior tibial tendon in my left foot.
What does that mean? It is likely an overuse injury, but the podiatrist was not overly concerned. A prescription for an anti-inflammatory and directions to heat, rub, and ice [repeat] later, I was out of the office within 10 minutes. Note, he was specific that I could continue running. He said that while it might hurt, I was not going to cause any long term damage by continuing to run. He said I should be mostly better in 3 weeks ... the count starts now.
I am also battling a case of what may be piriformis syndrome (per my PT). Again, likely from overuse, but the right combo of stretches and massage seem to be doing the trick.
Note for the record - I am committing now to seriously cut back on my running after this ultra (which will put me in the range of normal for most triathletes!). I think that will make a big difference in how I feel as I start the tri season.
Keep moving forward ...