Usually you see GPS devices that are suppose be used on the car, but the Paroos G-100 is in a different category, call it the GPS for runners. This uncommon unit has more than the main (GPS) feature, it can also work as a mp3 player, FM tuner, and even a thermometer.

On the primary GPS features it can:

keep track of the runner's position
warning when the runner hits below a certain speed
notification upon covering a set amount of distance
store up to 1,500 runs for comparison

If the Paroos G-100 isn't the complete system that real runners need, I don't know what it is. The serious problem is the weight, it can't be too heave or you won't be able to run properly and comfortably, in a worst case scenario you might even feel some pain after a long period of usage.

Via UberGizmo