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Definition of ultramarathon - 2 dictionary results

ul⋅tra⋅mar⋅a⋅thon

  [uhl-truh-mar-uh-thon, -thuhn]
Use ultramarathon in a Sentence
–noun
any footrace of 50 or more miles.
Origin:
1975–80; ultra- + marathon
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
Cite This Source Link To ultramarathon
ul·tra·mar·a·thon   (ŭl'trə-mār'ə-thŏn')   
n.  A cross-country footrace with distances of 30 miles (48 kilometers) or more.
ul'tra·mar'a·thon'er n.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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