ultramarathon

noun

ul·​tra·​mar·​a·​thon ˌəl-trə-ˈmer-ə-ˌthän How to pronounce ultramarathon (audio)
-ˈma-rə-
: a footrace longer than a marathon
ultramarathoner noun

Examples of ultramarathon in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Since January 2023, she’s run in 12 marathons and eight ultramarathons, which are anywhere from 50 to 100 miles. Lynsey Eidell, People.com, 28 Mar. 2025 Today, many Americans can join a polyamorous triad, remain child-free by choice, launch a new career in their 30s, or dedicate themselves to running ultramarathons, all without ruffling any feathers within their community. Olga Khazan, The Atlantic, 5 Mar. 2025 Diving into ultramarathons Power didn’t have a conventional route to becoming an ultra-athlete. Ben Church, CNN, 26 Feb. 2025 At the finish line of the 2015 Western States Endurance Run, arguably the most famous and most prestigious American ultramarathon, the crowd suddenly became energized. Brendan Leonard, Outside Online, 5 Nov. 2024 See All Example Sentences for ultramarathon

Word History

First Known Use

1977, in the meaning defined above

Time Traveler
The first known use of ultramarathon was in 1977

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Cite this Entry

“Ultramarathon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultramarathon. Accessed 3 Apr. 2025.

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