A short history of Marathon
The name Marathon dates back to the origin of the Florida East Coast Railroad. The name came from the railroad workers who were working night and day to complete the railway; due to the unrelenting pace and struggle to complete the project, workers complained that "this is getting to be a real marathon", and the word was later used to name the local railroad station.
The Keys historian Dan Gallager in his book Florida's Great Ocean Railway credits New York playwright Witter Bynner for naming Marathon. According to Gallager, J.R. Parrott, then Florida East Coast Railway's president and General Manager, invited Brynner to the Keys to "plot stations for the railroad". When asked to generate a name for the station at Key Vaca, Brynner proposed "Marathon", inspired by the following passage from Byron: "The mountains look on Marathon—and Marathon looks on the sea."
Adapted (trimmed) from the Wikipedia article Marathon, Florida, revision 1378547366 by its contributors, licensed CC BY-SA 4.0.