New answers tagged length
Save AS ... the kml file as a shapefile into a CRS that uses meters as units, like your local UTM zone. Then you can use the $length variable to label the line with the length in the layers units.
My solution to the problem would be: Open your kml file with a text editor (notepad for instance) Copy the entire text, and paste it here : http://www.zonums.com/online/kmlArea/ Done!
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