Athletic contest of three events (9)

I believe the answer is:

triathlon

(Other definitions for triathlon that I've seen before include "Multi-disciplined Olympic event since 2000" , "Sporting event" , "Athletics event" , "sporting challenge" , "Swimming/cycling/running event" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.