Kammala jumla mai zuwa: Karolina Szczepaniak (an haife ta 12 ga Agusta, 1992 a Warsaw) 'yar wasan Poland ce wacce ke fafatawa a tseren mita 400 na mata. A Wasannin Olympics na bazara na 2012 ta gama 31st gaba ɗaya a cikin zafi a cikin
Mata na mita 400 na mutum kuma sun kasa kaiwa karshe.