This is just a quick test and tutorial on displaying and sharing your GPS tracks with Google Maps.
I used Garmin’s BaseCamp™ software to interface with my GPS device, right-clicked my track from the list in the left sidebar, then selected “View in Google Earth.”
Once the track was loaded in Google Earth, I right-clicked on its name in the sidebar and selected “Save Place As”, then exported it as a KMZ file.
On the Google Maps website, I clicked “My Places” and then the big orange “Create Map” button. This revealed an “Import” link and some text fields to name and describe the map. I simply followed the instructions to upload my new KMZ file.
Finally, I reviewed the WordPress Support docs for details on how to display Google Maps in a WordPress blog. Happy trails!