For the past few weeks, I wasn't sure I was actually making any improvement. The furthest I could run at a time was 2 miles and on my longer runs, I'd have to take a bunch of mini walk breaks in order to finish. I'm pretty sure I looked like the bottom part of this photo:
Today I ran 3.5 miles without stopping though! I think just the persistence of running ~3 times a week finally paid off and for the first 2 miles it actually didn't feel hard at all. The last mile and a half was more difficult, but do-able. It was the first time I thought 13.1 miles might actually be possible after all. I was red, out of breath, and probably still looked like the spazzy little girl in the picture, but I also felt really good.