Should have included this above - Mileage: About 1,916 miles with about 31:30 driving time. Average miles about 315 miles per 100% charge.
DETAIL:
We averaged 314.9 miles per 100% charge. Max fill besides 100% at my house at the start of the trip was 93% from Hagerstown MD to my house on LI. We covered that 277 miles on 84% charge, arriving with 9%, equal to 329 miles at a 100 percent.
Each of the 5 legs of the 'fill ups' going into the 315 average were over 300 miles, except a 220 mile block where I went fast because I had plenty of extra range. For that, we equaled out to 290 miles of range, again over the 270 EPA estimate.
For most legs, I went 65-75 mph, adaptive 'self drive' (Rivian calls it Driver plus) that is basically hands free behind a tractor trailer or tall vehicle at the preset following distance. When I didn't have a car in front of me, I tried to cap my speed at 70 for efficiency. I didn't do any hyper miling or 'wierd' unsafe drag following.