marathoner

名词 marathoner:

1. someone who participates in long-distance races (especially in marathons)
   同义词：marathon runner, road runner, long-distance runner

mar.a.thon.er

n.（名词）
One that participates in a marathon, especially a marathon runner.
马拉松赛跑者：参加马拉松竞赛者，尤指马拉松赛跑者

【引伸】
mar.athon.ing
n.（名词）