ultramarathon

American  

[uhl-truh-mar-uh-thon, -thuhn] / ˌʌl trəˈmær əˌθɒn, -θən /

noun

1. any footrace of 50 or more miles.

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Etymology

Origin of ultramarathon

First recorded in 1975–80; ultra- + marathon

Example Sentences

Mr. Murakami has completed dozens of marathons, at least one ultramarathon and runs most days.

From The Wall Street Journal

The impact force of every step on a decline is roughly six times a person’s body weight, said Scott Johnston, an ultramarathon coach who has published a book on uphill running.

From The Wall Street Journal

This was an ultramarathon—62 miles of a different, more primal type of running.

From The Wall Street Journal

Sophie Power had not even laced up her trainers for her first run when she signed up to an ultramarathon.

From BBC

The ultramarathon runner said he planned to continue living adventurously for as long as his body allowed.

From BBC