Re-run is a novel application devoted to those who enjoy running. It allows to save the tracks you use for running around the city, compete against either your own previous results, results of your friends or a virtual artificial friend. It displays the route of your track using Google maps and GPS automatically detecting the streets names and current weather. It has a number of graphics presenting your speed, time related parameters and altitude while running and thus helping you to understand your performance and possible problems in detail. The application is highly optimized providing very good performance and stability and keeping you happy and informed while running.