1. any long and arduous undertaking
2. a footrace of 26 miles 385 yards
3. a battle in 490 BC in which the Athenians and their allies defeated the Persians
Definition categories: act
Sentences with marathon as a noun:
- He had a cleaning marathon the night before his girlfriend came over.
1. 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.