So, a data point, assuming you're going to the North Shore area (up I-80)... My car was driven from South SF to North Auburn (elevation 1200'), a distance of 128.8 mi on one Standard charge, at an average speed of 66.8 mi/hr, according to the logs. The car rolled in with 6 ideal miles left (still in Standard mode)...
So a Range charge, or slightly more restrained driving, can get you here pretty reliably. Perhaps charge at Clipper Creek, then you're on your own. You still have another 80 miles to go before you can touch the water, and another 5,000' elevation to gain and nothing much between here and Truckee (68 miles) for charging. Should work, but you might break out the slide rule to see what the wh/mi per 1,000 ft elevation gain works out to first. Maybe a second range charge for the second leg, or grab a boost in Truckee, so you can tour a bit when you arrive. So I think it can be done with only two charges, depending on your exact start and end points, if you pick a good mid-point. Recharging earlier (say, in Roseville at the Mall), would make the first leg easier, and the second harder.
Of course, the reverse trip is almost all downhill. Have fun!
