Last year during the BC2BC EV rally, we took a day trip from Grant's Pass to Crater Lake. It was tight on milage because you use a lot of energy climbing but you get a surprising amount driving back down.
There is a pretty consistent tradeoff of 6 rated miles per 1,000 ft. Every 1,000 feet you climb, you use an extra 6 rated miles and every 1,000 feet you go down, you get it back. If the hill is
REALLY steep, you drive down hill much faster than up, or you have the regen in "light" mode, you may not get all of the rated miles back, but with a
LOT of Colorado mountain driving experience, if you drive reasonably, you get the miles back.
Have Fun! :biggrin: It has been over 30 years since I was at Crater Lake in a Volkswagon Diesel.