The people and services that get you safely across the 33.3km distance.
You do not swim the Channel distance alone. Every UltraSwim 33.3 event is backed by boat and kayak cover, safety crews, coaches and a preparation team, so you can focus on the swimming while the support surrounds you across four days.
UltraSwim 33.3 is an Epic Adventure Swim Race™ covering 33.3km, the historic English Channel distance, split across five to seven point to point open water swims (we hate laps) over four days in warmer water locations (a half Channel 17km option exists). So far held in Croatia, Switzerland, Greece, Spain, Montenegro and the Caribbean, based at luxury spa hotels, with world class safety cover, premium support, a complete preparation programme and a diverse community that ranges from 14 to 74 years old, usually more women than men. From competitive Masters swimmers, triathletes and swimrunners to leisure and wild swimmers simply aiming to complete the distance. From a required pace of just 2km/h, any determined swimmer can do it. Come in a group or alone, everyone leaves with new friends for life. Award winning, all inclusive packages start from €1,575 CHECK (€750 for our 2 day Compact format)

Every UltraSwim 33.3 event is backed by boat and kayak cover, safety crews, coaches and a preparation team. This spoke covers the partners and support services that surround you across four days, so you can focus on the swim.
Swiss precision organisation and experienced crews mean the distance is the only thing you need to think about. From daily briefings to on water safety and coaching, the support team is built to get every swimmer across the 33.3km distance safely and confidently.

The iconic English Channel distance spread over 5 - 7 swims. Choose the full 33.3 CLASSIC, or the 33.3 / 2 BUILD 'Half Channel' which caps each swim at 5km. Life-changing for many.

Swiss precision event organisation. Boat and kayak safety cover provided on every swim. Daily briefings on conditions, route and pace. Experienced and dedicated team

Whether you come on your own or with a club, you will find your tribe, and make new lifelong bonds over 4 days of highs and lows as you reach for that 33.3 Finisher droplet

All iconic, each with their own challenges and beauty - Croatia, Switzerland, Greece, Montenegro, Spain and the Caribbean. From May to December and designed to fit your season and time constraints.
Explore the preparation programme, coaching and swim camps that get you to the start line ready.
Explore trainingSwiss precision organisation and experienced crews mean the distance is the only thing you need to think about.

The safety and support crews who make the crossing possible.

Boat and kayak cover on every swim, daily briefings on conditions and route, and world class event management throughout.
Yes. Coaching and a full preparation programme support you before and during the event.
No. You always swim within a supported group with safety cover close by.
UltraSwim 33.3 is organised with Swiss precision by an experienced team, with a strong record of safety and event management.