ultramarathon

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

noun
  1. any footrace of 50 or more miles.

Origin of ultramarathon

1
First recorded in 1975–80; ultra- + marathon

Words Nearby ultramarathon

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use ultramarathon in a sentence