The two-hour run I made to day was one of the best I've had in quite a while. It took me about 3 miles to get warmed up, but then my body wanted some speed and I just let it go. I had my Garmin GPS set for 1/4 mile splits, and my fastest split was 10:31. I had quite a few around 11:00 - 11:30 and quite a few rest splits around 12:00 - 12:30. I slowed to a 13 or 14 minute pace for the last 20 minutes so my body could cool down.
The temperature was in the low 60s, the air was clear, and it was a beautiful spring day.