Ran the loop I did from work last Thursday again last night. I just mapped it out this morning (still no GPS for me) and it is 3.7 miles...not 3.1. No wonder I was sore last week! I feel pretty good today though. Last night, I found that I was doing such a bang up job of trying to enjoy myself and the weather (gorgeous!) that my HR kept dropping too low. I had to keep reminding myself to work harder! That's a huge change from when I started and just doing the distance at all was a challenge.