Let's recap my progression of long runs over the last four weeks.
February 24: 8 miles @ 1:33:xx
March 3: 9 miles @ 1:33:xx
In just one week, I ran one more mile in the same amount of time. Huge confidence booster, by the way.
March 10: 10 miles - zero soreness that day or the next day. It felt like a normal 4 miler.
March 17: 11 miles - everything from the ribs down hurt. I felt like I was run over by a truck.
Why did I run faster on March 3rd than I did on February 24th? Why did I hurt so bad on March 17th but feel completely fine on March 10th?
Normally, I would analyze everything I could about these runs... Was it the weather? Was it what I ate for breakfast? How many chews did I eat during the run and how often? Was it the shorts I was wearing? Were there hills involved? What did I do the day before? How many miles did I run during the week? Did I cross train or lift during the week? Was my left shoe tied tighter? What time of day did I run? How much sleep did I get the night before?
After considering almost every variable that could have affected each run, I have just conceded to this:
Running is funny sometimes. :)