https://www.google.com/maps/timeline?
2) Convert kml 2 gpx
http://www.gpsvisualizer.com/convert_input
3) edit GPX and leave header gpx and
4) calculate speed: km/h= km/(hours*60+minutes)*60
5)Convert plain gpx to timeline gpx
http://gotoes.org/strava/Add_Timestamps_To_GPX.php
6) upload to strava