-UIO the longest possible? I think I read somewhere that Singapore and Quito, Ecuador, are exactly opposite (polar opposites) nearest to the equator... which would be the longest possible great circle.
-UIO, 10649 nm
doesn't look right... If you plug in GIB
, although it shows 10749 nm, I think that is an error. I did a straight-line great circle mapping on a globe, and it doesn't even go near Antarctica.
Here's the great circle line I ended up with AKL
Cook Islands (N.Z. territory)
east of Mobile, Alabama, US
Cape Hatteras, North Carolina, US
north of Terceira, Azores (Portugal territory)