I downloaded the Garmin Fit app, but I think it kinda sucks. It uses cell phone signals (in addition to gps, I think) to determine where you are, and the signals bounce off different towers. If I look at a map of my run, it shows me zigzagging all over the place! Which also means that it a) thinks I've gone farther than I have an which therefore b) puts my average pace much faster than I'm really running. I suspect that it might work better on a bike ride, when one is moving more quickly, but I have a Garmin 800 for that. I've run with the 800 tucked in my pocket and gotten much better results.

But, today I got a new toy. The Garmin Forerunner 910XT. Just released! Will go home tonight to figure out how to use it.