4KM Walk/Run

Yesterday was the best run so far for me. I went a total of 4KMS and even though I had to walk in between at some point and start with a fairly slow walk I think it went so well!! I felt good after my run and for the rest of the day too. I keep getting this pain in my shoulder though, I am not sure what its from. It could be from the way I move my arms when running. Hopefully I don't feel the same thing running tonight, because it really hurts, but goes away after I walk for a few minutes. Its a bit cooler tonight to and I find I don't run as well when it isn't as warm. I guess we will see how it goes.