How to convert gpx to tpo file

TOPO! navigation software should generally support import of files saved in GPX Exchange format (.gpx) and use the data for making .tpo mapXchange documents. Probably the easiest and most likely also only software that can help you with such gpx to top conversion.

Open GPX file    Open TPO file

Related software

TOPO! State and Weekend Explorer

A topographic mapping software from National Geographic Maps