There’s a concrete storm drain basin called a “Wash” near my home. It is a straight shot distance of 0.42 mile with a structure at its far end from where I could stand. When the building’s security area light is on, it is practically impossible to tell if my flashlight beam has reached it. However, before it turns on, during twilight, twice now I have confirmed that my LEP super throwers have lit the building, and quite well at that! Not bad for single cell easy-carry flashlight.
Here is a daytime shot so you know what I’m talking about and how far that 0.42 mile is.
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Great fun playing this distance with super throwers!