To watch or read a large number of instalments of (a film, book, TV series, etc.) in one sitting.
Origin
From French marathon, coined in 1894 by linguist Michel Bréal for the first modern time Olympic Games after Ancient Greek Μαραθών, a town northeast of Athens. Phidippides the Greek ran the distance from Marathon to Athens to deliver a message regarding the Battle of Marathon. The modern sport of marathon running is based on a run approximately the same distance. The toponym itself comes from μάραθον and refers to the prevalence of the plant in the area.
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