Swimmers in warm open water at an UltraSwim 33.3 event in Greece

The UltraSwim 33.3 experience: community, galleries and reviews beyond the swim

Four days of swimming over a long weekend…(or just 2 days on our 16.65 COMPACT edition in #17BARCELONA [Costa Brava]).

There are many amazing one day swim races and challenges around the world attended by thousands of swimmers every year. However, there are very few multi-day point to point swim races in the world - as they are hard to organise and mentally and physically tough to complete.

But as Captain Webb said, "Nothing Great Is Easy!"

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The Experience

UltraSwim 33.3 #14 Switzerland, swimmer at the finish line

What is the UltraSwim 33.3 community like

Our swimmers range from 14 to 76 years old, with a median age of 50+. More women than men. They come from over 50 countries. Many arrive alone, but everyone leaves with friends. The group energy at UltraSwim 33.3 is something we hear about constantly in testimonials, and it is true! It comes from the shared challenge, the shared water, and a community built around something truly extraordinary.

Swimmers from all walks of life, and a diverse range of experience, and ambition, united by a shared love of open water and adventure creates a culture of encouragement, where everyone carries everyone to the finish. UltraSwim 33.3 has a community that extends long beyond race week.

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Everything that makes UltraSwim 33.3 extraordinary.

Photo Galleries

Browse professional photography from every UltraSwim 33.3 edition from early morning starts to the Finisher droplet awards on the final day.

Browse the Galleries

Reviews and Testimonials

Rated 4.9 stars on RaceCheck. Read what our swimmers say about the experience, the community, and what it feels like to become a 33.3'er.

Read the Stories

UltraSwim 33.3 #10 Montenegro, preparation camp swim at the cave

At Pre-event Camps

Arrive early and get more water time. Our at event preparation camps run at select locations a few days before the event starts.

Learn About Camps

Every race. Every finish. Every extraordinary moment.

Everyone is treated like a pro, on and off the water. The level of support you receive on land depends on the package you choose. Those who want to make the most of their long weekend away should opt for the recommended ULTRA+[4*], or ULTRA+[5*] & ULTRA++ for the best hotel options, fastest transfers, 1:1 video analysis from our world-leading coaches, and sports massages post swim.

Don’t forget, your loved ones are welcome to join your experience and really feel part of YOUR team through our F3 (Friends, Family and Fans) Supporters package.

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UltraSwim 33.3 #9 Greece, watermelon at the feed station

Bring your partner, bring your family

Non-Swimming Partners (NSP) and family are part of the trip, never left on the sidelines. While you swim they explore the coastline and see you swim maybe at a feedstation or key passing point, they get immersed in local activities, relax at the spa hotel and gather at the finish line to join you for lunch. A dedicated host looks after the group, with dedicated transport on land or water. Evenings bring everyone together over dinner with the wider community.

Your F3 (friends, family and fans) will support you while you swim but will have slower mornings than you... Everyone is welcome and they will have just as much fun as you - and maybe even swim in the final few hundred metres with you - they will feel more part of your team than at any other event you've done.

See here for more info on the F3 programme

Introducing the F3 programme for friends, family and fans

Not sure which event fits you?

START YOUR JOURNEY

Nine short questions, about two minutes of your time. We read your submission, then share information with you to help you select the right event for you.

The pillars of the experience

Fantastic new Greek venue of Skopelos delivers

Location not laps

Point to point, off road swimming along iconic coastlines and lakes, we always try our best to avoid swimming laps. The full 33.3km is spread across six or seven swims over a four day long weekend.

Explore the format ›

UltraSwim 33.3 #14 Switzerland, swimmer portrait in Lake Geneva

Swim like a pro

Professional coaching, one to one video analysis, post swim sports massage and the world's best nutrition partners. We treat every swimmer like a pro-athlete and aim to send you home better than you arrived.

The experience ›

Five star comfort for both you, your family

Four and five star spa hotels, dedicated airport transfers and finish line refuel lunches. The challenge is real, but everything around it is quietly taken care of so you can focus on the swimming

Where you stay ›

UltraSwim 33.3 #12 Croatia, drone view of the final finish

Variety of locations to choose from, salty oceans to fresh water lakes, from 20°C - 27°C water

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.

How to book ›

Stay Informed

If you're interested, but can't commit to a challenge right now, subscribe to our newsletter and receive an edition of Flow magazine, UltraSwim 33.3's ultimate guide to open water endurance swimming.

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