They aren't crossing Antarctica going south to the other side to start going north again. It is Fake News and so are the flights listed in another post. The truth is, we don't know the true size of a flat earth so you can guess at the numbers all you want. None of your links proved a thing. For instance, four of them were "crossing" Antarctica on foot or in a vehicle and one was an alleged flight from 1977? Was the flight 22 minutes because that's the duration of the video. Thanks for playing, nice try.