ultramarathon

[ uhl-truh-mar-uh-thon, -thuhn ]

noun

1. any footrace of 50 or more miles.

Word History and Origins

Origin of ultramarathon¹

First recorded in 1975–80; ultra- + marathon

Example Sentences

He was champion of the 2017 Spartanion—an event created as a qualifier for the famous 153-mile Spartathlon ultramarathon in Greece.

From 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.

From 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.

From Outside Online

Competing at the ultramarathon level would be out of the question, according to her doctors.

From Outside Online

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.

From Outside Online

If snow is more your thing, the 6633 Extreme Winter Ultramarathon runs 350 miles across the Arctic Circle.

From The Daily Beast