File with.GPX extension contains geographical data in the form of points, routes, and tracks saved in XML-based text format. GPX files are used for exchaning data between applications and services over the network. The format was developed in 2002, and its current version, designated 1.
After converting the file to the new format, you will be able to use other programs to support it. Keep in mind, however, that the TPX file after converting to GPX may differ slightly from the original. The most important information should be kept, but if you want the file after conversion from TPX to GPX to be the same, you have to do this carefully and choose the proper application from the list below.
There is no guarantee, of course, that the conversion will come up to all your expectations, but it will certainly help you. If, after all, the effect of converting TPX to GPX does not meet your expectations, you can simply try to find on the Internet a different version of your file in TPX format, properly converted to a GPX file by someone else. If this fails, use the information provided in the further part of the website.
Unfortunately, if after performing the two previously described steps (trying to find your TPX file converted by someone else, and the attempt to convert it to GPX on your own) you still have a problem with your file, then there are only a few solutions left. You can once again try to find and install an application that can open the TPX file in its original format (without conversion to GPX file). Such a solution will be difficult to implement, but it certainly will give the best result.