gpx file:

1) Select a GPS track file to display.

• The file must currently be on your local PC.
• The file must be in GPX format.
  (see GPSbabel for a conversion tool).

2) The file will be uploaded to this site, parsed, coordinates sent to Google.
3) A map will be generated by maps.google.com.
4) The overlaid trail will be generated by maps.google.com.


Here is a sample GPX file.