Challenging Athletic Event With Three Stages
This page is the CodyCross answer for the clue below from The 1950s, Group 1812, Puzzle 5 (Polio Vaccine).
Question is: Challenging Athletic Event With Three Stages
and the answer is: TRIATHLON
Word Meaning:
TRIATHLON — An athletics event in which contestants compete in swimming, cycling and running in turn.
Definitions from Wiktionary.