" marathon "

[Noun]  | "mar*a*thon" | \ ˈmer-ə-ˌthän \

1: a footrace run on an open course usually of 26 miles 385 yards (42.2 kilometers); broadly : a long-distance race

2: an endurance contest

3: something (such as an event, activity, or session) characterized by great length or concentrated effort

Origin: 1896 ;

 Marathon, Greece, site of a victory of Greeks over Persians in 490 b.c., the news of which was carried to Athens by a long-distance runner;

[Noun]  | "mar*a*thon*er" | \ ˈmer-ə-ˌthä-nər \

1: someone (such as a runner) who takes part in a marathon

Origin: 1923 ;

[Noun]  | "half-mar*a*thon" | \ ˈhaf-ˈmer-ə-ˌthän \

1: a footrace run on an open course that is half the distance of a marathon (13 miles, 192.5 yards, or 21.1 kilometers)

Origin: 1932 ;

[Geographical name]  | "Mar*a*thon" | \ ˈmer-ə-ˌthän \

1: plain of eastern Greece in Attica northeast of Athens on the Aegean Sea

2: ancient town on the plain of Marathon

[Adjective]  | "marathon" 

[Noun]  | "marathon"