3 mile easy run on the treadmill

The weather has been really crappy the past few days, so I did an easy run on the "dreadmill" today. It actually wasn't that bad. I turned on a cassette tape of classic rock from the 70's and told myself I'd run for 30 minutes. I started at a pace of 6.0, then bumped it up to 7.0 and finished at 7.5 for the last half mile or so. I know the distance and speed needs to be calibrated, but I did 3.05 "miles" in the 30 minutes or 3 miles in 29:37. I was drenched in sweat and working hard, so it was a good workout even if the speeds/distances were off a bit.