I made it through just fine on the whole loop without charging. The trip was Seattle east side to Ashford, then Paradise, back through Ohonapecosh, Enumclaw, back to the east side. I started just shy of a full charge, ran on range mode, used the AC a little bit but drove reasonably. I had 50 miles range left when I got back in my driveway. Parked overnight on the way in cold weather. We should work to get a sun country charger at Paradise (difficult because its in a national park) or if that doesn't work then at the very least Ashford. I'm ready to kick in on that
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I used about 215 miles of range, evtripplanner.com estimated 190 miles of range would be used (did you make your donation to that site yet?). It's the second recent trip where I felt a tiny bit of stress as my estimated range went down quickly on the way up a steep mountain! It's amazing how much range you get back, or how far you can drive without using any when going down a mountain pass - still it's a stressful feeling.
My one moment of worry was when I was driving up Cayuse Pass where 123 runs into 410 and Tesla started to warm me I was about to leave the ability to reach any known chargers. It would not route me to Seattle. People are elsewhere pointing out the limitations of the Tesla navigation. Here the problem was that it was not accounting for, or not reasonable accounting for, how much range I'd gain on the way down the mountains down to Enumclaw. Evtripplanner did a much better job. Tesla should buy that site. It wanted me to drive very slowly to Ellensburg to charge, then go to Seattle. I knew even if terrible weather showed up I'd still be able to make it to Enumclaw. Geeze.
If anyone cares, my specific route was Bellevue to Ashford (405 to 167 to 161), then on to Paradise, through to Ohonapecosh Visitor Center, back on WA 123 to WA 410 to Enumclaw and then WA 169 back north.
-Nick