Shore to finish:
Swim, Connect, Celebrate
Join our iconic open water swimming events that bring people together across the most beautiful rivers, lakes, and ocean locations in France and Switzerland.
OpenSwim is coming back soon!
The 13th edition of the OpenSwim Harmonie Mutuelle – France’s leading open-water swimming series for the general public – will take place from May to September 2027.
In 2027, the circuit will once again feature three distinct series, across lakes, rivers and the ocean.
Our goal is to welcome even more people into open-water swimming with events tailored to every level. The circuit also reflects our growing commitment to raising awareness about water protection, preserving our environment, and promoting the positive impact that physical activity has on health and wellbeing.
Stay tuned! More information about the 2027 season is coming soon.
From training to adventure
Join our open water events and turn your preparation into real open water experiences.
EXCITING EVENTS
Discover a wide variety of cities and landscapes in our events venues in France and Switzerland.
MULTIPLE DISTANCES
Discovery, Evolution, Performance: find the distance that matches your goals.
VARIED EXPERIENCES
From ocean, to rivers, and lakes, experience swimming to the fullest.
Start your challenge here
- Cold water
- 13/12/2026 1:00 pm
- Paris - Bassin de la Villette
- 100 m in cold water
Coupe de Noël Paris
- Lake Series
- 29/05/2027 11:00 am
- Lacanau
- Crossing Lacanau Lake (3750m) - 2K - 1 K - 500m - Relay 4x500m
Lacanau
What our participants say
Backed by more than a decade of experience, our open water events are designed to give swimmers complete peace of mind, letting them concentrate on what matters most: the swim.
Gérardmer
A wonderful experience – thank you to the organisers. It was lovely to be able to swim around the lake.
Ka Rol
La Baule
It was so much fun
@axelreymond
Lyon
Thank you all. It was my first time swimming the 1.1km race – It was a great experience and for a good cause. I’d definitely do it again.
Séverine Sens
Lyon
Had a great time!
23_kj_79
Lyon
Pure joy
@oprah_and_tino
Paris report
A great race, very well organised – what a brilliant idea to have staggered starts rather than a mass start! It was brilliant
@lucilewoodward
Paris report
We’ll definitely be back soon! Thanks for organising it and for the race report
@joffreymaz
OpenSwim Harmonie Mutuelle Paris
A great race, very well organised – what a brilliant idea to have staggered starts rather than a mass start! It was brilliant
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Swim camps
CONFIDENCE STARTS HERE
Join our Open Water Training Camps and build confidence, skills, and endurance.
