What can we learn from this? Garmin seriously need to improve their data smoothing algorithm!
My average speed was 5.1mph, with a slight speeding up in the middle third and a bit of a slow down in the last quarter. Which is probably how it should be.
Averaging 5.1mph would put me at the 70 mile checkpoint after 13hrs 43min, just over five hours before the cut off. Not that I am suggesting I could do it that fast.
Oh, the glory.