I went on my same 2.5-mile loop that I did yesterday. I felt... terrific, actually! I ran about 15 minutes before pooping out (but that was on a hill)... I walked for 3 minutes, then ran 2 more minutes (still on the hill, you know!), then walked 2 more and then ran the rest of the way home (er, downhill).
I got shin splints before I even hit the first mile, but I just kept going (since Jean promised me I wouldn't permanently injure myself by running with shin splints, unlike, say, running with a broken ankle) and, much to my shock, they actually went away. But I think running uphill (which I have to do for the middle part of my run) helps... sooo... I dunno.