OK, so I just did my first half marathon; 13.1 miles. I barely finished. I cannot believe how incredibly sore I am. If I had every aspirin and every muscle relaxing lotion or cream, I could certainly use it now. I was hobbling through the finish line. Those old knee injuries came back to haunt me. Both my knees are incredibly swollen, I look like I have two pumpkins stuck in the middle of my leg! But I did finish and that was more than enough for me.