How to say "marathon" in Japanese

• マラソンJLPT N2approx.Common
  nounThe word for the race itself: the long-distance running event. This is the word for the sporting sense — running, training for, or watching a marathon.
  私わたしたちはそのマラソンに参加さんかするつもりだ。↗

  We will take part in the marathon.
• 長丁場ながちょうばCommon
  nounA figurative 'marathon': a long stretch or long haul — time-consuming work or an undertaking that will take a long time. Not the word for the race; for the footrace use マラソン.

Use 「マラソン」 for the race itself, the long-distance running event; use 長丁場 for the figurative marathon — a long stretch or long haul, time-consuming work rather than a sporting event.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

• マラソンmarathon
• 長丁場ながちょうばlong stretch
• マラソン競走マラソンきょうそうmarathon
• マラソン大会マラソンたいかいmarathon race