14 Mile run today

I ran 14 miles today.  I went to the park near my house.  I ran the half mile loop 28 times lol.  I know, thats somewhat repetitive, but I wanted to focus on the strides, the meditative aspects of running and the repetitiveness of it.  I felt great till the last 4 miles.  They were a bit painful and I was running those slower than the rest.