GPS Track Logs
Did you say track log? When I ride with my GPS, it creates a log of points during the ride. Each point consists of a lattitude and longitude, date and time, and elevation. A collection of these points makes a "trail" and is known as a track log.
What good is it? A track log is a fairly accurate recording of a ride. I first use them for post-ride analysis. I can also load a previous ride on my GPS and easily follow the same route. You can also share track logs with others.
Where does the track log come from? My GPS autmatically creates the track logs. I start each ride by clearing any existing tracks. For more details on configuring your GPS for optimum track logging, see this page.
Can I use your track logs? Yes, you can load it on your GPS as long as it's in the correct format for the software you're using with your GPS. You can also view the track log on a map using any number of mapping programs. I use TopoFusion and have used USAPhotoMaps as well.
Is GPX a standard format? The great thing about standards is that there are so many from which to choose. GPX is an XML-based format for storing GPS-related data. The GPS doesn't store data in GPX format, but the software that transfers data to and from the GPS can do so. Many applicaitons format GPX files similarly, but not exactly the same. The track logs on this site are formatted for TopoFusion. I suggest a utility such as GPSBabel for converting between track logs formats.