Does anybody know how to pull a GPX track from google?
Like this one?

GPS track (google maps)

 

Its been a while since I have worked with Google maps, but, if memory serves, you need to use Google Earth Pro, I don't think that the free version will do it. Anyway, since it is an overlay, it will appear as such, and you save the track as a GPX and transfer it to your handheld, or whatever maping system you want, assuming of course it isn't somehow locked by the company that put it there. Hope that helps, probably not though.

You could also zoom in as far as possible, write down the coordinates at pretty much every turn, and then recreate your own, though it won't be exact.

 

My response is a little late but might help you out if you still need the GPX. You can use the pro version of Google Earth to easily do this or if you don't mind following a few extra steps you can do it for free.

I've done the following steps for you in case you run into trouble, here's the GPX file.

• Make sure Google Earth is installed
• Click on the link you provided to load it in Google maps and click on the "View in Google Earth" button on the top right.
• In the "Places" box on Google Earth, right click on the "Cleghorn Wet" track info (the one at the bottom with the blue diamonds icon) and select "Save Place As"
• Go to http://www.gpsvisualizer.com/gpsbabel/
• Set the first drop down to "Routes", "Input file format" to Google Earth, "Output file format" to GPX, and upload the KML you just saved.
• Now you should have a GPX file you can download.