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Why 33.3km?
Is UltraSwim 33.3 for me?
Am I ready?
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DISCOVER
More than just a race
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11.1 Discovery & 22.2 Build
Pre-event Swim Camps
QUESTIONS
Why 33.3km?
Is UltraSwim 33.3 for me?
Am I ready?
Event format
The entry process
Answering your questions
FAQs
COOL STUFF
Precision Fuel & Hydration
THEMAGIC5
Outdoor Swimmer
deboer wetsuits
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