Is it progress or stasis?

Today's run (treadmill): 30 minutes

I spent the day in the city, so I got up early this morning and ran on the treadmill. I'd considered the elliptical, but I had some cognitive dissonance after yesterday's run. I wasn't sure that I was making much progress in my recovery and wanted to retest my hip. I'm not sure what that accomplished, because my experience on today's run was exactly the same as yesterday.

As I ran on the treadmill, I thought about my decision to run, versus other alternatives. I knew I'd be covering a lot of ground on foot today, so I could have easily used city walking as my workout. I chose to run because I really wanted to gain some aerobic benefit. If my hip felt better today, I'd know I was on the right track.

I got through the run without much trouble, but my hip soreness remained. The pain was no worse than on Tuesday, but I wondered if I'd traded a recovery opportunity for some marginal conditioning. There wasn't any post-run pain, so I don't think I did any damage. Tomorrow I'm definitely returning to the elliptical for a lower impact workout.

The question right now is when to try another street run. The last two times I did that, my recovery was set back for days. I need to get back to race training mode, but I'll need to be sure that I've passed the risk point for re-injury.