Yes, that's the round trip travel distance including the climb and descent. The trip out was a bit shorter as it took off and advanced at around 45° until it reached altitude. The return home and landing was slightly longer as it was a 90° descent.
This isn't Google Maps, where I'm asking for directions to the closest McDonalds and getting an estimate. It is on Google Earth (Pro), plotting the GPS coordinates from the kml file. It's pretty accurate. It will be measuring all the slight deviations in the path travelled, not the linear distance between point A and B.
Just a test for accuracy:
https://en.wikipedia.org/wiki/Lincoln_Memorial_Reflecting_Pool
The Lincoln Memorial Reflecting Pool was designed by Henry Bacon, and was constructed in 1922 and 1923, following the dedication of the Lincoln Memorial. It is approximately 2,029 feet (618 m) long (over a third of a mile) and 167 feet ( 51 m) wide.
I get 617.99 meters, not bad on the first try...
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