ultramarathon

noun

ul·​tra·​mar·​a·​thon ˌəl-trə-ˈmer-ə-ˌthän 

-ˈma-rə-

: a footrace longer than a marathon

ultramarathoner

ˌəl-trə-ˈmer-ə-ˌthä-nər 

-ˈma-rə-

noun

Examples of ultramarathon in a Sentence

Recent Examples on the Web

In Utah, dozens of runners and volunteers who were part of the Moab 240 ultramarathon were evacuated Sunday after being stranded by flooding. — Jaimie Ding, Arkansas Online, 13 Oct. 2026

Severe weather also slammed Utah during the Moab 240, a five-day-long ultramarathon. — Jason Allen, CBS News, 12 Oct. 2026

About 70 runners and volunteers participating in Utah's Moab 240 ultramarathon were evacuated from the rugged outdoor race course on Sunday after being stranded overnight by a heavy rainstorm that hit the area, authorities said. — ABC News, 11 Oct. 2026

For endurance athletes, Apple promises up to 84 hours in Low Power Mode and 45 hours of continuous GPS tracking, enough to power through a 100-mile ultramarathon. — Andrew Gebhart, PC Magazine, 10 Sep. 2026

Word History

First Known Use

1964, in the meaning defined above

Rhymes for ultramarathon

• arrondissement
• ferrosilicon
• lycopersicon
• mesencephalon
• polysilicon
• stereopticon
• telencephalon
• agamemnon
• automaton
• diencephalon
• panopticon
• phenomenon