It depends on the dimensions of the pool which, you have chosen not to share with us. There can, therefore, be no useful answer.
He went swimming in a swimming :)
I was swimmingWe were swimmingYou were swimmingHe/She/It was swimmingThey were swimming
no, swimming is a real sport, syncronised swimming isn't
Recreational swimming is swimming just for fun. It is noncompetitive and usually not structured.
proper swimming costume- not lycra or anything swimming cap swimming goggles
natación This is 'swimming' the noun, not 'swimming' the participle. 'Swimming' the participle is nadando. To say, "The swimming team is swimming." in Spanish, you say, "El equipo de natación está nadando."
The present perfect tense of "choose" is "have chosen" or "has chosen." For example, "I have chosen" or "She has chosen."
1.5 k in swimming is 1.5 kilometers of swimming or 1 and a half kilometers of swimming.
The clothing you would wear while swimming is the definition of swimming out.
People from swimming clubs go to swimming galas
if it is not swimming it is dead!