RouteConverter is a free, user friendly GPS tool to display, edit, enrich and convert routes, tracks and waypoints. It helps me to plan routes and consolidate tracks and I hope it could help you. It works with routes, tracks and waypoints, allows to display, edit and convert GPS data, supports more than 70 of the most common GPS file formats, automatically detects the file format, opens files, URLs and ZIPs by drag-and-drop, file dialog, system clipboard, localized in 12 languages, and supports statute, nautic and metric units.
What's new in this version:
Version 2.10 has added Polish and Russian localization and solved speed problems when rendering lots of markers with and without descriptions.