ultramarathon Hear it!

ultramarathon definition

ultra·mara·thon (ul′trə mar′ə t̸hän′)

noun

a footrace that is longer than a marathon, usually for 30 miles or more

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Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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