11.75K Run

Yesterday I ran 11.75K in 1hour and 53mins with our running group.  I am okay with this time.  Yesterday was a busy day hence why I am posting a day late.  I ended up going to work for a little bit yesterday and they over to my friend Jenn's before off to a Stag and Doe for a friend from work.  I ended up wearing my old shoes yesterday for my run as my feet were still sore from my new shoe (blisters!).  The problem is my old shoes bother my knees so now my knees are sore.  Argh! I don't know what to do.  I may go in to the running store next week and see if they have any suggestions.