marathoner /ˈmæ.ɹæ.θən.ə(ɹ)/ noun1 •Someone who participates in a marathon or other long-distance races.“I just go as long as I can before my legs get too heavy and my head gets in a haze,” said Chris Zablocki, the best marathoner most elite marathoners have never heard of. — 2018 formsmarathoners