Nike has announced that Nike+ runners have logged over 22 million miles on

This, they inform us, is the equivalent of completing more than 800,000 New York City marathons and burning off the calories of more than five million slices of pizza.

Users will be pleased to know that there are some new features coming this summer.

The new offerings will give runners new ways to challenge each other and participate in "virtual" marathons.

As far as the setting challenges option go, users will be able to choose their own challenge theme, set their own rules, and select the number of participants and team names.

They will be able to upload their own pictures to highlight their challenges on the homepage.

Other new features include the Nike+ Distance Club where runners need to achieve 100, 500, or 1000 miles to be initiated into the club, and a Weekly poll.

New music offerings will also be introduced, to help those Nike+ runners across 160 countries to keep on runnin'.