You might try this product from the Photographers-Toolbox called "Tracklog Creator". It offers a free trial and is modestly priced at about $6
According to the author:
"This is not a replacement of Lightooms module "Auto-Tag" but an add-on.
Mainly, there are 2 use-cases for this plug-in:
Missing GSP info is a common problem of cameras with built-in GPS. Further, you can't use Lightrooms "Auto-Tag" to automatically geotag these photos.
To fix this, you are left to manually "Drag & drop" the photos in the Map module, but this is time consuming and error prone. A lot of work!
What if you could reverse engineer the available GPS info into a tracklog.
Then you could use "Auto-Tag" of the Lightrooms Map module to automatically geotag these photos!
That is exact what this plug-in does: reverse engineer the GPS info of photos in Lightroom into a tracklog.
Or you need a tracklog of your photos with GPS info in Lightoom.
For example to visualize your tour / journey.
This plug creates a tracklog based on the GPS info of your photos.
Or with other words, this plug-in reverse engineers the available GPS info into a tracklog.
http://photographers-toolbox.com/products/lightroomstatistics/tracklogcreator/Jpegman