IPA: /ˈdjuːəθlɒn/
KK: /ˈdjuːəθlən/
A type of race that includes two parts: running and cycling, usually done in that order.
She trained hard for the duathlon to improve her running and cycling skills.
**Duathlon** → It is formed from "duo-" (from Latin *duo*, meaning two) and "athlon" (from Greek *athlon*, meaning contest or prize). The word "duathlon" refers to a contest that involves two events, typically running and cycling.
Think of 'duo' meaning two, and 'athlon' meaning contest — a duathlon is a contest involving two events.