If you're eager to meet your fitness goals, you can hit the ground running with Nike's (NKE - Get Report) Nike+ Running app. Whether you're on the treadmill or lapping the loop in Central Park, this app tells you how far and how fast you're going. And with audio notifications, there's no need to slow down to look at your phone. The app also lets you listen to whatever music gets you going.
Competitive folks might like the NikeFuel points feature. Keep pace by comparing stats with runners around the globe. Sync Nike+ with Facebook (FB - Get Report), Path and Twitter to share results with your world. Not surprisingly, wireless connectivity is required for sharing. And the app warns that the GPS could "dramatically decrease battery life." But as Nike might say, "just download it."The free app is compatible with iPhone, iPod touch, and iPad, and requires iOS 4 or later (soon iOS 5).