Insufficient information is given in the question to form an opinion.
DQ T = disqualified Turn. see belowset of standard abbreviations defining reason for disqualification which have been adopted by the European Swimming Writers.Whenever a competitor is disqualified the reason is reported against the swimmers name using the following set of codes.TurnTFinishFIArmsAStrokeS----->Head PositionHLegsLStartSTTakeoverOEarly StartStroke ChangeMAppeal MadeAAppeal DisallowedXFoulingFONo AppealWrong LaneLMisconductMEquipmentE
it means start swimming
S=Stroke L=Legs 5=lap/length L=Wrong lane So I would interpret this as on the 5th lap, the swimmer kicked into an adjoining (wrong) lane therefore disrupting the neighbouring swimmer. Stroke indicates it was an offence whilst performing a recognised stroke, rather than other types of violations such as false start, not touching wall at end of each lap etc.
distance???? Do you mean how far can a swimming pool travel???
swimming (verb) : nager swimming (sport): la natation
j'aime la natation - I like swimming