ðɪs swˈɪmɪŋ ᵻvˈɛnt jˈuːzd fɹˈiːstaɪl swˈɪmɪŋ, wˌɪtʃ mˈiːnz ðætðə mˈɛθəd ʌvðə stɹˈoʊk ɪz nˌɑːt ɹˈɛɡjʊlˌeɪɾᵻd ʌnlˈaɪk bˈækstɹoʊk, bɹˈɛststɹoʊk, ænd bˈʌɾɚflˌaɪ ᵻvˈɛnts.
This swimming event used freestyle swimming, which means that the method of the stroke is not regulated (unlike backstroke, breaststroke, and butterfly events).