The range of a Boeing 767 varies significantly depending on the specific model and payload. The original 767-200 had a modest range of approximately 3,900 nautical miles (7,220 km), but the extended-range 767-200ER increased this to a massive 6,590 nautical miles (12,200 km), enabling it to fly transpacific routes. The most popular variant, the 767-300ER, typically has a range of about 5,980 nautical miles (11,070 km) with a full passenger load. The largest variant, the 767-400ER, has a slightly shorter range of 5,625 nautical miles (10,415 km) due to its larger size and weight. In 2026, many 767s have been converted into freighters (767-300F), which maintain a range of around 3,255 nautical miles when carrying a maximum structural payload of 52 tons. These range capabilities made the 767 the pioneer of "ETOPS" (Extended-range Twin-engine Operational Performance Standards), allowing twin-engine jets to safely fly long oceanic routes previously reserved for four-engine aircraft.