1. an athletic competition consisting of three consecutive events, typically swimming, cycling, and running

Examples

• She trained for months to compete in her first triathlon.
• The Olympic triathlon includes a 1.5-kilometer swim, 40-kilometer bike ride, and 10-kilometer run.
• Many athletes find the transition between events the most challenging part of a triathlon.
• The local triathlon attracted over 500 participants this year.
• He finished third in the men’s triathlon division.
• Training for a triathlon requires dedication to three different sports.