This is the 2422nd most frequent Japanese word.
マラソン
Marathon.
In this sentence, the word 'マラソン (marathon)' refers to a long-distance running race, commonly over a distance of 42.195 kilometers, in its literal sense.
昨日、私は初めてフルマラソンを完走しました。
Yesterday, I completed my first full marathon.
Here, 'マラソン (marathon)' is used metaphorically to describe a prolonged television broadcast lasting an extended period, often continuously.
テレビで24時間マラソン番組を見ました。
I watched a 24-hour marathon program on TV.
In this context, 'マラソン (marathon)' is employed figuratively to liken continuous hard work or an extended effort to the endurance required in a marathon race.