The field meaning: Long path is the major-circle route between stations—the direction opposite the shorter great-circle bearing—and can become the stronger HF route under suitable ionospheric conditions.
What is really happening
Its many hops and longer distance add loss, but favorable daylight, darkness, and takeoff-angle conditions can outweigh the extra path. Echoes may reveal simultaneous routes.
Do not confuse it with this
A distant contact is not automatically long path; the arrival direction must be inferred or measured, ideally with a directional antenna.
Use it deliberately
Calculate both bearings, compare the signal and noise in each direction, inspect conditions along both routes, listen for echo or delay, and record the time/band when long path wins.
Decision boundary
Operating shorthand and propagation models are tools for making a better decision, not proof of a path, contact, or safety condition. Confirm with current rules, measured signals, weather, and the complete station.
