Traversée Internationale du lac St-Jean

Traversée Internationale du lac St-Jean

One of the world’s most prestigious professional races with a long and rich history. Thousands line the banks to greet the swimmers at the finish. Water temperature and winds can very, but water temperature under 20°C (68°F) is expected. Offers US$40,000 in prize money as part of the global FINA Open Water Swimming Grand Prix circuit that always attracts the world’s best professional marathon swimmers.

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Traversée internationale du lac St-Jean is a professional and amateur open water swimming competition held in lac St-Jean in Roberval, Québec, Canada. This event has been long considered to be one of the greatest professional marathon swims in history with an excellent organization that focuses on the athletes. The entire community celebrates the exploits and abilities of all of the athletes, from the fastest to the slowest, in the competition usually held in late July. Each summer since 1955, the Traversée internationale du lac St-Jean attracts the world’s elite professional open water swimmers to Roberval and is part of the FINA Open Water Swimming Grand Prix, an annual professional marathon swimming circuit, and is held in Lac St-Jean. Traversée internationale du lac St-Jean includes open water swimming competitions, outdoor shows, pyro-musical fireworks, a Winners’ Parade, family-oriented activities, and the traditional ‘Supper in the Streets’ sponsored by Loto-Québec. This is an enormous outdoor banquet bringing together 10,000 people at a table more than a kilometer in length set in the middle of town. Traversée internationale du lac St-Jean has been honored by the International Marathon Swimming Hall of Fame as an Honour Organisation. It is one of the World’s Top 100 Open Water Swims. Canadian Christine Cossette completed an unprecedented two-way crossing of lac St-Jean in 1985 that led to several years where two-way crossings of lac St-Jean were the norm.

Name of Race

Traversée internationale du lac St-Jean

Event Nickname

Traversée internationale du lac St-Jean

Event Month



North America

Body of Water

Lac Saint-Jean, Quebec, Canada

Distances Offered

under 1k
Over 10k





Water Type


Swim Type