The 5 km Swim In Maine is the longest event at a small open-water meet held at Lac de Maine in Angers, western France. It is part of the Pays de la Loire regional open-water circuit, offering three distances: 5 km, 2.5 km, and a 500 m discovery swim. The 5 km race begins in the morning, preceding the shorter events scheduled for later in the day.
The competition takes place in the lake, not a pool. Swimmers require the standard open-water preparation and must provide proof of clearance for competitive swimming, such as a certificate or an FFN or FFTri license. The 500 m event is for children and adults new to open-water swimming, while the longer distances cater to swimmers seeking a significant endurance challenge. Minors require parental authorization. Swimmers must present identification when collecting and marking caps. Organizers request participants bring a reusable bottle or cup to minimize waste at the venue.