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GPS Track Link to Open in GMaps

I have a GPS track (in KLM or similar format) which I’d like users to be able to click, then have it open in whatever suitable app/program they have installed.
Currently my work around is to add a track to google earth / maps then imbed that into a google maps iframe.
This works great - EXCEPT, the track has to be made public on Google Maps, which I might not want available to general public (think a guest farm where guests can go for a walk but you don’t want jo public shoing up).

Anybody done something similar?