Definition of marathon noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˈmærəθən//
    ; NAmE NAmE//ˈmærəθɑːn//
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  1. 1a long running race of about 42 kilometres or 26 miles the London marathon to run a marathon See related entries: Athletics
  2. 2an activity or a piece of work that lasts a long time and requires a lot of effort and patience The interview was a real marathon. The painting would be completed in one marathon session. a marathon five-set tennis match From the story that in ancient Greece a messenger ran from Marathon to Athens (22 miles) with the news of a victory over the Persians.

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