Search Result for "marathoner": 
Wordnet 3.0

NOUN (1)

1. someone who participates in long-distance races (especially in marathons);
[syn: marathoner, marathon runner, road runner, long-distance runner]



WordNet (r) 3.0 (2006):

marathoner
    n 1: someone who participates in long-distance races (especially
         in marathons) [syn: marathoner, marathon runner, road
         runner, long-distance runner]