Triathlon Glossary: Terms and Definitions

This glossary defines triathlon terms in plain language and identifies where a definition depends on a governing body or event. Use the event's current rules for any term that carries a penalty or eligibility consequence.

1. Define the decision: Identify the event, governing body, jurisdiction and season.
2. Check the controlling information: Read the current athlete guide and rulebook before relying on a general example.
3. Rehearse the plan: Turn requirements into a personal timeline, checklist or pacing guardrail.
4. Review and adjust: Recheck for race-week changes and follow officials when local instructions differ.

A reader searching for triathlon glossary should write down the real constraint first, use the process above and choose a reversible next step. For global readers, record distances and quantities in metric units first and add imperial equivalents where they help. Label the governing body, event edition, product model and date whenever those details control the answer.

Examples are planning aids, not guarantees. Course conditions, equipment, fitness, rules and individual response can change the right decision.

The evidence and rules review used World Triathlon rules and documents and World Triathlon age-group information. Check the controlling source again when the event, product, health context or guidance changes.

Open the guide for the next unfamiliar concept. Keep the decision specific, record what you tried and revisit the plan when conditions or evidence change.