Thought I was averaging 8.40 because foot pad was miscalculating distance. Felt great, felt invincible for first 10 miles, held pace to maintain the wrong pace. Very frustrating.

Not wear the foot pod
If it's too good to be true, it is
Bring a visor to wear instead of bandana
Go music less for last 1/2 mile if peppy tunes run out
Don't be shy, stand right next to pacer, otherwise you will lose them in the crowd ; wonder if being with the pacer would have made it easier to maintain speed within the pack...