WHAT A DIFFERENCE A WEEK MAKES

Today I ran the same route as last weeks race. This week was 5 min slower. Now I'm not sure if that's because I worked all night prior to today's run or if this was a train run not a race or some combo??? I know that a big deal today was that I had some issues with my shoes that caused me some foot problems. But the thing I do know is that after last weeks run I felt great ready to keep going. Today, I was done. I felt like I was working real hard just to maintain. I should get my new shoes on Tues. hopefully they will help.