I ran 12 miles today, my longest run of the year. I wasn't sure how long I was going to go. I wanted to go longer than 10. I thought 12 would be good. Then, I got off to a good start, and I thought I could do 13.3, which is 100 laps. But as I ran, I got slower, and slower, and slower... and at 12 miles (90 laps), I thought, "Enough is enough." I feel good. Tired, but good.