Definition of "marathon" in English

noun

1. A 42.195-kilometre (26-mile-385-yard) road race.

2. (figuratively, by extension) Any extended or sustained activity.

   • He had a cleaning marathon the night before his girlfriend came over.
   • I learned from the marathon that to finish a race you simply keep running.

verb

1. (intransitive) To run a marathon.

2. (informal, transitive) To watch or read a large number of instalments of (a film, book, TV series, etc.) in one sitting.

   • We're going to marathon Star Trek next weekend.