That’s what Erick Schonfeld of TechCrunch is calling it.
… Google Earth released a new edition of its desktop app which hikers, runners and cyclists are going to love. They call it Google Earth 5.2. I call it the Hiker’s Edition.
One of the new features allows you to recreate the path of a hike or bike ride by ingesting geo-data from one of your GPS devices. The visualizations show you the speed, elevation, and other stats from your hike, which you can see as an animation inside Google Earth. …
read more on TechCrunch
This video features an example of the new track feature in Google Earth 5.2, showing a bike route to work. Download the latest version of Google Earth …
Click PLAY or watch it on YouTube.
besthike.com 
I tried the tracking feature and for me at least it seemed to be no different than previous versions – switching through 180 degrees at every switchback. I was hoping for more of a fly-over version which takes in the entire route without following it to the tee.
Also .. no terrain layer yet? Once GE has that *then* I might be more inclined to call it the Hiker’s edition.
Oh, and not that I’m complaining about GE for a second by the way. It’s still one of the most awesome pieces of software and I use it all the time!
Is it compatible with the Garmin Foretrex 401?I tried to use it with one of my wifes polar’s and no luck.