Other forms: longer-range
Something long-range has a long reach or can be used over long distances. A long-range missile is a weapon that travels a long way before it explodes.
Long-range aircraft can travel for many miles, and the long-range travel of many migratory birds spans nearly as large a distance. You can also use the adjective long-range to describe a large span of time, rather than distance: "My long-range plans include running for President when I'm in my fifties or sixties."