do most pilots who fly 777, 747, 767-300 are all 8 plus hour routes? someone told me that an delta 777 flies fm KATL to KORD, which is not a long flight at all! i always assume that any pilot flying "heavy" are flying most of there flights overseas and 8hr (plus) nonstop flights..

747 / A380 / A340 are pretty much all long-range over-water.

Other widebodies do a lot of overseas ops, but may also do some shorter hub-to-hub or hub-to-large market.

It depends on many factors. Many heavies fly short routes for repositioning reasons. I have flown on a UAL 747 from IAD-ORD. Air Canada flies 777s from YYZ-YUL, which is only a 30 minute flight.
Also, if the market will support a large aircraft, they will use it on that route. Selling many seats on a large aircraft will lower the airline's cost per seat mile and generate a lot of money.
It comes down to economics and operational necessity.

i have seen on alot of 747 pics that they have an extra door next to the cockpit door. someone told me that its the pilot rest area. pretty cool. do alot of heavy airliner have an crew rest in the cockpit? And what is rule of the faa when you need additional crew when flying long haul flights? someone told me if a flight is more than 8hr, then you need an relief pilot.

Years ago AA's last flight of the day DFW-AUS and first flight AUS-DFW(186 miles) was a DC-10. I was told it was to get the plane off the ramp at DFW as there wasn't enough space to overnight it there.

Under FAA rules if you don't have a F/E or navigator you can't be in a pilot seat more than 8 hours so if the flight is +8 there will be a relief pilot and +12 two relief pilots. With a F/E (Classic 747s and DC-8s and -10s) you can be in the seat 12 hours.

Years ago on annual elk hunting trip to Montana we used to ride a DC-10 from MKE to MSP then a DC-9 to MSO, The MKE-MSP ride was normaly full plane.