miCoach

This running app by Adidas is not as comprehensive as say, Runkeeper Pro, but it’s really straight-forward to use and well-designed overall. The built-in GPS module enables you to monitor your running time, distance, pace and calories burnt, but it also has a shoe wear feature that tracks how many miles you’ve got left on your running shoes.
Free from the iTunes Store & Android Market.

Runkeeper

One of the coolest things about this popular app is that you can add users to your circle using Facebook and Google Contacts—very convenient. What we like best about the Runkeeper app though is the ability to put together your very own Street Team, fellow Runkeeper users you “recruit” from your social networking platforms.
Free from the iTunes Store, Android Market and Marketplace.

Fitocracy

Designed to be extremely goal-driven, all the app requires is that you log in your day’s activity (could be anything from strength or cardio training to muscle groups workouts). The app will then award points, increase your level and suggest quests you can complete (and put them on display for your followers to see). Click on the tags to see like-minded fitness bunnies and there you have it—a handy fitness social circle.
Free from www.fitocracy.com.

Nike+iPod Sport Kit

The Sensor included in the kit beams information such as distance, pace and duration of run to your mobile device so you may sync the information to your computer via www.nikeplus.com. Useful features include the charts that you can pull out from your online account once you’ve synced all the data, the (rather robotic) voice that tells you your distance (and other updates) twice during your workout and the ability to post your runs to Twitter and Facebook.
$30 from Apple; app is US$1.99 from the iTunes store.