The English Channel distance of 33.3km over four days in warm water.
All inclusive adventure swim packages from 1,800 euro.
Most swimmers arrive alone and leave with friends for life.
Hear what 33.3'ers say about the adventure of a lifetime.
Every event footprint measured, reduced and compensated through Sea Trees.
Questions about an event or a booking? Talk to the team.
Find your critical swim speed and pace your training.
There are no large hotels on Milos and in Pollonia the accommodation is a mixture of small boutique properties (4* and 5*) and small apartment type hotels with a pool (3*)