Try it on any maps app. Remember that for northern hemisphere to northern hemisphere it's shorter than you'd expect since the earth is smaller far from the equator and you can take polar routes (another reason why Russia has such a strategically important location)Uh wouldn't the opposite way be definitely way too far though? Like if it's 10000km direct path wouldn't it be 30000km other way?
I have it at 7000 miles from Inner Mongolia to NY going west and 6700 going east. So roughly 11000 km. Equidistant, maybe a bit longer.