ultramarathon
noun
ul·tra·mar·a·thon
ˌəl-trə-ˈmer-ə-ˌthän 
-ˈma-rə-
: a footrace longer than a marathon
Examples of ultramarathon in a Sentence
Recent Examples on the Web
The supplements out today have an incredibly wide variety of electrolyte concentrations, said Patrick Burns, who practices emergency medicine at Stanford Health Care and occasionally runs in ultramarathons.
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ABC News, 28 Feb. 2026
At the 2025 Western States, one of the premier ultramarathons in the world, Caleb Wilson won the men’s race while wearing both the Radical AirFlow and ACG Ultrafly.
—Ian Servantes, Footwear News, 2 Feb. 2026
Kristen was also an ultramarathon runner and someone who found joy and purpose in caring for animals.
—Jesse Sarles, CBS News, 5 Jan. 2026
The Divergent and Big Little Lies actress will play Eve, an ultramarathon runner who, following the tragic death of her twin sister, enters the most intense competition on the planet: The Badwater 135 Ultramarathon, a 135-mile race through Death Valley.
—Scott Roxborough, HollywoodReporter, 4 Nov. 2025
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ABC News, 28 Feb. 2026
At the 2025 Western States, one of the premier ultramarathons in the world, Caleb Wilson won the men’s race while wearing both the Radical AirFlow and ACG Ultrafly.
—Ian Servantes, Footwear News, 2 Feb. 2026
Kristen was also an ultramarathon runner and someone who found joy and purpose in caring for animals.
—Jesse Sarles, CBS News, 5 Jan. 2026
The Divergent and Big Little Lies actress will play Eve, an ultramarathon runner who, following the tragic death of her twin sister, enters the most intense competition on the planet: The Badwater 135 Ultramarathon, a 135-mile race through Death Valley.
—Scott Roxborough, HollywoodReporter, 4 Nov. 2025
See All Example Sentences for ultramarathon
Cite this Entry
“Ultramarathon.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultramarathon. Accessed 14 Mar. 2026.
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