The last couple of runs I have done, if gmap is to be believed, I have run at a blistering (for me) pace. Today I ran a 3.9 mile route in 30 minutes, a 7:45 pace. I know I've dropped my pace by quite a bit over the past year with some changes to my stride and form, plus just a lot of running. And I was running faster than usual. This was the shortest run I've done in a long time and I was kind of in a hurry to finish it, get home and get on with my day. I hit a trail crossing that I usually pass at about 15:00 to 15:30 at 14:15. But I have a really hard time believing I ran a 7:45 pace.
Now I'm tempted to get the Nike+GPS iPhone app and see how it compares. But then I would need to carry my iPhone on runs. Running is about the only time my iPhone isn't within arms reach.
I'm not even really sure why it matters to me. All I can come up with is that running sub-8 minute miles on a training run might do what running two marathons, two half marathons, countless other races and 1000s of training miles haven't: make me consider myself a runner.