How do I prepare for an open-water triathlon swim?

Open-water preparation includes comfort, sighting, equipment and the event’s start procedure, as well as swimming fitness. Practice in an appropriate supervised setting with support, rather than alone. Confirm current conditions and organizer guidance before entering. A pool CSS score helps organize training pace; it cannot assess water conditions or open-water safety.

What should I practice beyond pace?

Sighting, breathing under changing conditions and swimming in the kit you plan to race in. Build comfort before adding speed or a crowded start.

How does pool pace transfer?

Pool turns, sighting, water conditions and equipment change the task. Use CSS as a pool reference and review open-water effort separately.

What should I check at the venue?

The official start, exit, markings, water conditions and safety instructions. If conditions exceed the setting you have prepared for, discuss the decision with the organizer and support staff.

Where does this guidance come from?

See the source below for the underlying rules or evidence. Practical training advice should be adapted to your experience and circumstances.

Read the source

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First race checklist

Breno Melo

Boston endurance coach since 2015. RRCA, USA Triathlon and TrainingPeaks Level 2 certified. Background & experience.

Published 11 October 2026. Editorial source check: 11 October 2026. Personal coaching review has not been represented as completed.

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