CHG-ON
Still in love after all these miles
Try evtripplanner as well. http://evtripplanner.com
Can't send to car but great for planning out required charge level at each supercharger.
I also use EVtriplanner.com. It calculates elevation and compensates for exterior temp and climate setting. You can also add in other, non-Tesla charge points. Seems to work well. It has very detailed data regarding each leg of the trip, which is quite interesting.
Also, it was designed by a college student who deserves our support.