Over in another thread they're discussing the shortest scheduled 757 flight. Let's look at the opposite.
What is the longest scheduled 757 flight? For the 752? For the 753? Longest all-cargo flight? Longest passenger conbination flight?
when I say scheduled, I mean 5 times weekly or more, year round scheduled service flown by an IATA member airline. That means most "charters" would be excluded.