If you have been thinking about jumping on the Nike+ bandwagon, now is your chance to do so.

Today marks the fifth anniversary of Nike+, an innovative fitness tool to keep running enthusiasts motivated and performing at their peak. Since its launch, the Nike+ community has rapidly grown with over four million members and more than 375 million combined miles logged. To honor the this milestone, Nike is gifting free Nike+ GPS Apps for a limited time only, available on iTunes App Store starting today, May 23.

So log on, download, and rack up some miles on Nike+.

Nike + has teamed up with Tom tom on their latest round of running gadgetry. In a departure from the traditional Nike + systems, this band is linked to satellites, instead of relying solely on the data from the chip in the runner’s shoe. According to Nike:

“The Nike+ SportWatch GPS is designed for high performance with an extremely clear and readable user interface that delivers the information necessary to the user while in-run. It adds personalization and motivational features to the running experience, including audible sounds, challenges, run reminders and more.

The Nike+ SportWatch GPS is designed to be simple and intuitive with only three buttons and a Tap Screen for navigation. During the run, the new Nike+ SportWatch GPS captures location information while showing runners their time, distance, pace, and calories burned on an easy-to-read screen featuring a customizable layout. Throughout the run, the GPS receiver works in tandem with the shoe-based Nike+ Sensor to deliver highly accurate pace and distance data.”

We’d love to hear from anyone who has had a chance to try this thing out.