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Wh/mi on Saddle road, Big Island, Hawaii

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My wife has to commute from Waimea to Hilo everyday and back. That amounts to 67 miles one way on the Daniel K Inouye Highway (she prefers this road compared to the coastal belt road). I was wondering whether anyone has recorded the Wh/mi on their Model 3 or any other EV on that route. I presume that it would be far from conventional calculations as the route has a total upslope of 4500ft and downslope of 7000ft along the route. The EV range calculator on eCalc - the most reliable electric Motor Calculator on the Web for RC Pilots (even after keying in the correct upslope and downslope readings) looked too good to be true.
 
I've made a couple of round trips from Waikoloa Village on a Standard Range Model 3. From Waikoloa Village to the top of Saddle Road used 40% of the battery, however the complete trip from Waikoloa Village to Hilo used 33% due to regen going downhill. I would expect that you would use less power from Waimea because you're starting at a higher elevation.

P.S.: The trip planner in the navigation system was fairly accurate on the net energy for this trip.