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Definition of ultramarathon

ultramarathon

/ˌʌl.trəˈmær.ə.θɑːn/
ul · tra · mar · a · thon
Plural:ultramarathons
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ultramarathon Lexical Profile

ultramarathon Game Scores & Validity

• noun

1

Any long-distance footrace that exceeds the standard marathon distance of 26 miles and 385 yards (42.195 kilometers), typically covering 50 kilometers, 50 miles, 100 kilometers, or 100 miles, or lasting for a fixed period such as 24 hours.

Example

"She spent eight months training in the mountains to prepare for a grueling 100-mile ultramarathon."

Synonyms
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Antonyms
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• Nearby Words

ultraleftist
ultraliberal
ultralight
ultramarathon
ultramarathoner
ultramarine
ultramodern

Word Origin & Etymology

Coined in the 20th century by combining the Latin-derived prefix 'ultra-' (meaning 'beyond') with 'marathon,' which derives from Marathon, the plain in ancient Greece from which the messenger Pheidippides famously ran to Athens to announce victory over the Persians in 490 BC.

Cite this Entry

Wordmom. (2026). Definition of Ultramarathon. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/ultramarathon
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