For all Item posts can be uploaded GPX file which include the track rendered on map. File can be uploaded on Item Post edit screen in GPX Tracks section, directly from your computer or from WordPress Media:
After successful upload, track is rendered on the map:
Show the track on frontend
Tracks related to Item posts can be displayed on the site using blocks which render map.
From block options can be defined if you would like to show standard Item markers, GPX Tracks or combine the map to show both Item markers and tracks. Follow please documentation pages related to specific block to get more information about available options.
Please note that support of GPX Track is already limited only to Openstreetmap provider of maps.