I did a quick day trip up to Spokane and noticed I'm at about 260 watt/mile (doing about 75 mph, maybe a little more at times, HVAC on to cool to about 70 to 72F, outside started at about 88F and decreased to about 82F when I hit Spokane). That means I probably have a max of 192 miles on my SR+, realistically maybe more like 180 miles as the battery ages. Now granted that's at 75 mph... I probably could decrease the speed to 70 and maybe get down to 250 watt/mile... not sure how much more I would gain if I slowed to 65 mph, but that might be something I have to do at times during the winter...
As much as I love Sentry mode, I'll probably turn that off unless I'm plugged in charging or know I'll be able to hit a charger before leaving. Otherwise phantom drain can be pretty decent (10+ miles a day). With Sentry off my car goes to sleep pretty quick and phantom drain is like less than two miles a day.