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Meaning of walkathon

walk•a•thon

Pronunciation: (wô'ku-thon"), [key]
— n.
  1. a long-distance walking race for testing endurance.
  2. such a contest held to raise funds for a charity or special cause, with supporters or sponsors pledging to donate a sum for a specific contestant or team for each mile walked or for the total miles covered.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.