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Definition of "ultramarathon" [ultramarathon]

  • A cross-country footrace with distances of 30 miles (48 kilometers) or more. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Use "ultramarathon" in a sentence
  • "It could be an athletic event — finishing a first ultramarathon for example (or a first marathon for that matter) — or a short story sale."
  • "I decided to try out the ElliptiGO on the advice of celebrity ultramarathon runner Dean Karnazes."
  • "Those numbers would probably be higher if it weren't for the injuries that sideline nearly all runners training for a marathon or ultramarathon."
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