“Just keep swimming.” You probably know Dory’s old saying—well, you’re going to have to apply it! 🐠 Open-water swimming is the flagship discipline of the Open Swim Harmonie Mutuelle circuit, and the least we can say is that it’s going to set you free like water! For its 12th edition, 8 events will take place in the most beautiful rivers, lakes and oceans, including 4 stages especially supported by Harmonie Mutuelle 😌. The season is about to begin, so wetsuits on, get set, swim!
The Open Swim Harmonie Mutuelle circuit is back again this year and is enjoying more and more success! 😎 Swimming is a low-impact sport that requires little physical conditioning, so it’s accessible to as many people as possible at any age. It’s the ultimate health sport! ✨ And you don’t have to be Laure Manaudou to start a race: you just need to know how to swim 🏊♀️. But open-water swimming is different from doing laps in a pool ☝️. Here, you’re completely free. More sensory than the pool, the discipline appeals through its direct contact with nature and its many benefits: reduced stress, a cardiovascular boost, and a feeling of freedom 🦋. The practice already attracts hundreds of thousands of enthusiasts in France. The only requirement to take the plunge is wanting to! Still feeling a bit apprehensive? The intro sessions are here to sweep away all your fears with a single freestyle stroke 😉.

(Photo credit: Sebastien Ferraro)
Before lining up at the start of an open-sea race or in a big lake, why not try the discipline in real conditions, supervised by professionals? 🌊 No need to be a swimming ace to take part. These intro sessions organized by Harmonie Mutuelle are free, open to everyone with registration, and are here to give you all the keys before you dive into the deep end! 🛀 Come discover the practice, safely, at the Cassis, Gérardmer, Paris and La Baule stages. Intro sessions to discover the sport safely are offered to make it accessible 🥰. On the program: supervision by professionals, answers to your questions, expert advice, and the loan of a wetsuit and a buoy 🛟. The aim of these moments is for you to build confidence in the water, because yes, you don’t swim the same in the sea as in a pool! Here, you’ll learn to manage your breathing, your orientation (yep, you won’t have lane lines to guide you 😅), and the currents that could carry you away from the finish line 🏁. Enough to make you feel like a fish in water! 🐟 The intro sessions also make it possible to be in a group and therefore to motivate each other between participants—sign up here: together, we’re stronger 💪.
🎥 Discover open-water swimming with Open Swim Harmonie Mutuelle:
And if, as the water flows, you want to switch into competition mode, head to one of these cities to kick off your season ⬇️.
Meeting on the starting line of an open-water race may seem intimidating, but it’s the best way to begin! You’re supervised throughout the course and you benefit from an exceptional setting 🤩. As a major partner of Open Swim, Harmonie Mutuelle is committed to eco-responsible events that preserve our environment and the magical places where you’ll be swimming! 🌍 Come on, let’s give you a quick overview of Open Swim Harmonie Mutuelle to whet your appetite 🤤. The first stage, Open Swim Harmonie Mutuelle Cassis (Sunday 7 June 2026), takes place in one of the most beautiful Mediterranean calanques, with a breathtaking view of the château and Cap Canaille 😇. For the second stage, head to Open Swim Harmonie Mutuelle Gérardmer (Saturday 27 June 2026) in the heart of the Vosges, in the largest natural lake in the massif, with its iconic event, the “Tour du Lac” (4.5 km, with and without fins) 🏞️. Next comes the circuit’s legendary stage, Open Swim Harmonie Mutuelle Paris (Saturday 11 and Sunday 12 July 2026). It’s not every day you get to swim in the Canal de l’Ourcq and the Seine right in the heart of the capital, at the foot of the Eiffel Tower 😍. To keep you busy during your summer holidays, Open Swim Harmonie Mutuelle La Baule (Saturday 22 August 2026) will have you swimming in an exceptional setting where your body will become one with the ocean 🫧. With all that, we hope you’re not in over your head 😂.

(Photo credit: Sebastien Ferraro)
Now that it’s crystal clear, shall we meet up at a race on the Open Swim Harmonie Mutuelle circuit? 😜
A next-gen platform helping sports enthusiasts of all levels discover territories and heritage through races tailored to them.