Most of the data listed below comes from my Nike+ Ipod device. Which I discovered in the past is about 97% accurate. I am actually running farther then what it says. But that is the fun part - I will run, and just go by the Nike info, every now and then I'll check the accuracy. I decided to check this run. I wanted to run 6 miles, instead of the 5 I had been going all week.
Nike+ 6.11 Miles 59:23 9:43 pace
Checked mileage on gmapspedometer: 6.55 Miles 59:23 (that always accurate) 9:03 pace