Training day 85 - 15 miles

Out for a 15 mile run and it was a sore one. Up to 10 miles i was feelin pretty good but after 11 it was a struggle and i really had to grind out the last 4 miles. I am going to put it down to the 2 runs on the treadmill. Another down side is that i am injured again. My right hip flexor has been really sore since so i have now stayed off it for 2 days. Hopefully i will be able to get out tomorrow. If it runs into a 4 th day i will repeat week 5 of my schedule