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ultramarathon

[ uhl-truh-mar-uh-thon, -thuh n ]

/ ˌʌl trəˈmær əˌθɒn, -θən /

noun

any footrace of 50 or more miles.

Origin of ultramarathon

First recorded in 1975–80; ultra- + marathon

Words nearby ultramarathon

ultraliberal, ultraligation, ultralight, ultralow frequency, ultramafic, ultramarathon, ultramarine, ultrametamorphism, ultramicrobalance, ultramicrochemistry, ultramicrofiche

Example sentences from the Web for ultramarathon

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 |DAILY BEAST