C-5M, with a cargo load of 281,001 pounds (127,460 kilograms), can fly 2,150 nautical miles, offload, and fly to a second base 500 nautical miles away from the original destination — all without aerial refueling. With aerial refueling, the aircraft's range is limited only by crew endurance.
https://www.af.mil/About-Us/Fact-Sheets/Display/Article/104492/c-5m-super-galaxy/