Top Definition
Main Entry: kay·ath·lon
\kī-ˈath-lən, -ˌlän, ÷-ˈa-thə-\
Function: noun
kay- + -athlon (as in triathlon)

: an athletic contest that is a race consisting of three phases (as kayaking, bicycling, and running)
John Westra won his first kayathlon at the age of 48, shortly after founding
by John Westra March 21, 2009
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