marathon

a long-distance running race that is usually about 42 kilometres (26 miles) long

maratón, carrera de larga distancia

• run a marathon

Collocations marathon runner · marathon race

• She's training for the London Marathon.

  Ella está entrenando para la Maratón de Londres.

an event or activity that lasts a long time, especially one in which people compete against each other

evento prolongado, competencia

• a marathon of something

Collocations marathon event · marathon session

• There was a marathon of old movies on TV last night.

  Hubo una maratón de películas antiguas por televisión anoche.

a very long and tiring effort to do something, especially one that needs a lot of determination or patience

esfuerzo prolongado y agotador

• it takes sb time/a long time to do sth

Collocations marathon effort · marathon struggle

• It was a marathon effort to get the project finished on time.

  Fue un esfuerzo prolongado y agotador para terminar el proyecto a tiempo.