I've been flying United's Star Alliance N14120 routes...

if you go to flight aware and enter the tail number of an aircraft it will show its position IRT and give a brief history of past flights. It will also show you the flight plan with SIDs and STARs usually, pretty much all the info in previous post should be there.

http://flightaware.com/

I went looking through United 757 flights for the longest duration flights and this is one of the planes that I found...UAL/COA N14120...Newark to Oslo, Copenhagen, Hamburg, Madrid...etc.

The cost index should be zero for economy cruise. One of my flights from Hamburg to Newark I entered a cost index of 5 or 10 when I took off, later I changed it to zero somewhere over the Atlantic and wound up running out of fuel while I was taxiing to the gate...ooops!

If anyone knows of a good long haul route for a 757 by another carrier please list them.

:)

BTW...my gross weight was aprx.249,000lbs on these flights over the Atlantic, MTOW is around 255K lbs. you can of course take the 757 much farther unloaded, I bet an empty one could do Sydney to L.A.