La Grande Traversée de l'Ouest offers you the opportunity to take on Mauritius' first major 10 km open water swimming challenge, whether solo, with swimming accessories, or as part of a relay team.
Choose your format, build your team, and become part of the history of this inaugural edition!

For swimmers ready to conquer the full challenge
A dedicated category allowing participants to complete the entire crossing using swimming accessories.
Fins and snorkel are not provided.
5 km per swimmer – share the effort and experience the adventure as a team
2.5 km per swimmer – the ideal format to discover long-distance swimming, take on a challenge with friends, and share an unforgettable experience
The safety of all participants is our highest priority.
The course will be fully supported by a dedicated water safety team, including safety boats and kayaks positioned along the route. Three floating refreshment stations, located every 2.5 km, will provide swimmers with water, nutrition, and the opportunity to refuel before continuing their crossing in the best possible conditions.
Participants must be at least 18 years of age, be confident swimming in open water, and have the appropriate level of training and preparation for the distance they have chosen.