Freescale Semiconductor Incorporated

A tidal wave of apps and digital fitness products — loaded with practical data and often inexpensive (or even free) — is making tech-free running a thing of the past. A survey from Freescale Semiconductor, the chip supplier behind Fitbit and other wearable devices, found that 88% of runners training for marathons used wearable technology. Here's a sample of some data-tracking apps and gear we found useful.

Free data

Pumatrac: The free iPhone running app tracks and audibly informs you of your distance traveled, speed, calories burned and weather, ultimately producing a real-time map, elevation profile of your route and an overall...