Long run - 11 miles plus - tech glitch

I had a great long run yesterday, over 11 miles, and I caused a tech glitch in the tracking of it by fiddling with music too much - oh well!
I think the run probably had another half mile onto the end of it, changing my three splits. In other words, I believe I didn't slow down as much as it showed - I will have to prove it again on my next long run.
Overall goal - 8:40 per mile averages or better, and I feel like I came pretty close!
Incomplete details here.
As always, times include my 30 seconds walking every mile.