Ok, after taking delivery of my 77Ls, I have some ULH to mention:
KIX-EZE : 10121 NM
KIX-GRU: 10135 NM
Those are the longest routes I operate. Seems you cant fly past 9900nm in two days.. I used 1-4, 2-5, 3-6 routing.. Im sure I could have squeezed 3 flights on to 1 aircraft.. but I was too lazy to try...
Im sure someone has a longer flight then me... Though I can get 10600nm out of my 77Ls with my configuration.