any footrace of 50 or more miles.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use ultramarathon in a sentence
He was champion of the 2017 Spartanion—an event created as a qualifier for the famous 153-mile Spartathlon ultramarathon in Greece.How Aleksandr Sorokin Ran 100 Miles at a 6:31-Mile Pace | Molly Hanson | January 11, 2022 | Outside Online
Decoding, reworking, and potentially one day augmenting the human genome is an ultramarathon, buoyed by potential medical miracles and fraught with possible abuses.Scientists Completed the First Human Genome 20 Years Ago. How Far Have We Come, and What’s Next? | Shelly Fan | September 28, 2021 | Singularity Hub
It is absolutely ridiculous, just like attempting to run a 100-mile ultramarathon, climbing mountains for fun, or eating an entire Taco John’s Six-Pack and a Pound in one sitting all by yourself.
Competing at the ultramarathon level would be out of the question, according to her doctors.
She has her eye on trail-running ultramarathons like the UTMB in France and the Hardrock 100 in Colorado, as well as possible FKT attempts on routes like the Wonderland Trail in Washington and the Superior Trail in Minnesota.
If snow is more your thing, the 6633 Extreme Winter ultramarathon runs 350 miles across the Arctic Circle.Now That Everest Is Closed, Check Out These Other Extreme Adventures | Nina Strochlic | May 8, 2014 | THE DAILY BEAST