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
Just days before his crash, Braconi ran a 100-kilometer (63 miles) ultramarathon in Big Bear with his high school soccer teammate Colby Hahn.
—
Erika I. Ritchie, Oc Register, 22 Oct. 2025
Now a new study that followed ultramarathon runners for up to a year suggests an answer.
—Jason Dinh, Scientific American, 20 Oct. 2025
Jornet said the idea to link the American 14ers via human power came to him in 2023, when an early-season injury prevented him from competing in the ultramarathon circuit.
—Jayme Moye, Outside, 19 Sep. 2025
Researchers examined 100 participants between the ages of 35 and 50 who had never undergone a colonoscopy but had completed at least five marathons or two ultramarathons.
—Khloe Quill, FOXNews.com, 7 Sep. 2025
See All Example Sentences for ultramarathon
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.
Erika I. Ritchie, Oc Register, 22 Oct. 2025
Now a new study that followed ultramarathon runners for up to a year suggests an answer.
—Jason Dinh, Scientific American, 20 Oct. 2025
Jornet said the idea to link the American 14ers via human power came to him in 2023, when an early-season injury prevented him from competing in the ultramarathon circuit.
—Jayme Moye, Outside, 19 Sep. 2025
Researchers examined 100 participants between the ages of 35 and 50 who had never undergone a colonoscopy but had completed at least five marathons or two ultramarathons.
—Khloe Quill, FOXNews.com, 7 Sep. 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 25 Oct. 2025.
Copy CitationLove words? Need even more definitions?
Merriam-Webster unabridged
Share