Here's a quiz .....
See if you can come up with a route plan that starts in one continent an ends in another, and flies over TWO intervening continents (just touching any landmass of a continent is OK). The flight has to be nonstop, and flown with a 747-400ER, so ETOPS is not an issue. Plot your course on Great Circle Mapper http://gc.kls2.com and post it for us to see. The range of the 747-400ER is 7670 nm.
Flying over water between the continents is even more challenging.
I've got one that is 7287 nm and all the continents are separated by water, but I won't show it just yet. There are lots of other possibilities.