With dedicated GIS programs like the GPS Visualizer it should be easy enough to convert various navigation files, like the GHD or the GPX, between each other.
Convert Geonaute Keymaze tracklog file to GPS eXchange format.
We found one software available in the database for this conversion.
On-line services software - convert ghd to gpx on web
A GPS mapping tool
Convert from ghd file format
|Yes, GPS Visualizer supports gpx file conversion as a target file type.||No||No||No||No||No||No||No|
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.