marathoner

[ mar-uh-thon-er or, esp. British, -thuh-ner ]
/ ˈmær əˌθɒn ər or, esp. British, -θə nər /

noun

a runner who competes in a marathon.

Origin of marathoner

First recorded in 1920–25; marathon + -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for marathoner

British Dictionary definitions for marathoner

marathoner

/ (ˈmærəθənə) /

noun

a person who runs in a marathon
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012