ultramarathon
Americannoun
Etymology
Origin of ultramarathon
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
And after competing in the Sydney Marathon this August, he’ll run a 100-mile ultramarathon in Arizona in October.
From Los Angeles Times • Mar. 6, 2026
I thought I could just show up, fake my way through my first ultramarathon and destroy everyone.
From The Wall Street Journal • Mar. 1, 2026
Earlier research found that ultramarathon runners often experience a breakdown of healthy red blood cells during races, which can potentially lead to anemia.
From Science Daily • Feb. 21, 2026
The Prince of Wales has offered his "huge congratulations" to Kevin Sinfield as he closes in on finishing his latest ultramarathon challenge, raising money for motor neurone disease treatment and research.
From BBC • Dec. 6, 2025
It had been an incredible, symbolic day for our family and I hoped for the country, but it was also a kind of ultramarathon.
From "Becoming" by Michelle Obama
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
