My iPhone Adventure

Here is the primary reason I switched from using my iPhone 3GS with the Nike+ GPS to the Garmin Forerunner 305 for recording my runs:

In both scenarios, I am running down Latah Trail on the map above. As you can see the Garmin is much more accurate.

I also am getting heart rate information with the Garmin. The Nike+ GPS does not currently support a heart rate monitor.

Definitely an upgrade.