-athon

Definition from Wiktionary, a free dictionary

[edit] English

[edit] Etymology

From marathon, the events described by words made from this suffix being of a great length, as a marathon is a race of a great length

[edit] Suffix

-athon (sometimes -thon after a vowel)

1. Used to form words meaning a greatly extended period of any activity, usually for the purpose of fundraising.

   walkathon

   telethon

   radiothon