| | Event type

50 metres Backstroke, Girls

Date	10 – 11 October 2018
Status	YOG
Location	Natatorium, Parque Olímpico de la Juventud, Villa Soldati, Buenos Aires
Participants	39 from 36 countries

Pos	Swimmer	NOC	R1	SF	Final
1	Kaylee McKeown	AUS	28.17 (1 h4)	28.14 (1 h2)	28.28 (1)	Gold
2	Darya Vaskina	RUS	28.46 (1 h5)	28.24 (2 h2)	28.38 (2)	Silver
3	Lila Touili	FRA	29.07 (4 h4)	28.80 (2 h1)	28.78 (3)	Bronze
4	Rhyan White	USA	28.46 (2 h4)	28.62 (1 h1)	28.86 (4)
5	Fernanda de Goeij	BRA	29.33 (3 h3)	28.91 (4 h2)	28.91 (5)
6	Tamara Frías	ESP	28.89 (2 h5)	28.93 (4 h1)	29.01 (6)
7	Madison Broad	CAN	28.95 (3 h4)	28.78 (3 h2)	29.12 (7)
8	Diana Nazarova	KAZ	29.72 (7 h4)	28.86 (3 h1)	29.55 (8)
9	Arina Baikova	LAT	29.25 (1 h3)	29.86 (7 h2)	–
10	Peng Xuwei	CHN	29.32 (2 h3)	29.49 (7 h1)	–
11	Anastasiya Shkurdai	BLR	29.35 (3 h5)	–	–
=12	Natalie Kan	HKG	29.39 (1 h2)	29.09 (5 h1)	–
=12	Laura Ilyés	HUN	29.39 (4 h3)	30.05 (8 h2)	–
14	Alena Semizhon	BLR	29.43 (5 h4)	29.23 (6 h1)	–
15	Taydé Sansores	MEX	29.51 (6 h4)	29.29 (5 h2)	–
16	Ingeborg Løyning	NOR	29.73 (5 h3)	29.76 (6 h2)	–
17	Malene Rypestøl	NOR	29.77 (4 h5)	29.81 (8 h1)	–
18	Maria Pessanha	BRA	29.83 (2 h2)	–	–
19	Kalia Antoniou	CYP	29.91 (6 h3)	–	–
20	Chen Szu-Chi	TPE	30.02 (5 h5)	–	–
21	Kristýna Štemberová	CZE	30.04 (3 h2)	–	–
22	Margaret Markvardt	EST	30.14 (4 h2)	–	–
23	Mariella Venter	RSA	30.15 (6 h5)	–	–
24	Tatiana Salcuțan	MDA	30.21 (7 h3)	–	–
25	Nea-Amanda Heinola	FIN	30.27 (7 h5)	–	–
26	Gina Galloway	NZL	30.31 (8 h3)	–	–
27	Lucija Šulenta	CRO	30.50 (8 h4)	–	–
28	Maddy Moore	BER	30.59 (5 h2)	–	–
29	Sara Junevik	SWE	30.64 (6 h2)	–	–
30	Mia Phiri	ZAM	30.89 (7 h2)	–	–
31	Karolina Jurczyk	POL	31.00 (8 h5)	–	–
32	Carolina Cermelli	PAN	31.18 (1 h1)	–	–
33	Aaliyah Palestrini	SEY	32.11 (8 h2)	–	–
34	Robyn Young	SWZ	32.34 (2 h1)	–	–
35	Ashley Chai	BRU	33.19 (3 h1)	–	–
36	Roylin Akiwo	PLW	34.84 (4 h1)	–	–
37	Tayamika Chang'anamuno	MAW	37.61 (5 h1)	–	–
38	Nafissath Radji	BEN	37.89 (6 h1)	–	–
39	Kayla Hepler	MHL	37.98 (7 h1)	–	–

Round One (10 October 2018 — 10:14)

Top 16 advance to the semi-finals.

Heat One (10:14)

Pos	Lane	Swimmer	NOC	Time
1	–	Carolina Cermelli	PAN	– (–) –	31.18
2	–	Robyn Young	SWZ	– (–) –	32.34
3	–	Ashley Chai	BRU	– (–) –	33.19
4	–	Roylin Akiwo	PLW	– (–) –	34.84
5	–	Tayamika Chang'anamuno	MAW	– (–) –	37.61
6	–	Nafissath Radji	BEN	– (–) –	37.89
7	–	Kayla Hepler	MHL	– (–) –	37.98

Heat Two

Pos	Lane	Swimmer	NOC	Time
1	–	Natalie Kan	HKG	– (–) –	29.39	Q
2	–	Maria Pessanha	BRA	– (–) –	29.83
3	–	Kristýna Štemberová	CZE	– (–) –	30.04
4	–	Margaret Markvardt	EST	– (–) –	30.14
5	–	Maddy Moore	BER	– (–) –	30.59
6	–	Sara Junevik	SWE	– (–) –	30.64
7	–	Mia Phiri	ZAM	– (–) –	30.89
8	–	Aaliyah Palestrini	SEY	– (–) –	32.11

Heat Three

Pos	Lane	Swimmer	NOC	Time
1	–	Arina Baikova	LAT	– (–) –	29.25	Q
2	–	Peng Xuwei	CHN	– (–) –	29.32	Q
3	–	Fernanda de Goeij	BRA	– (–) –	29.33	Q
4	–	Laura Ilyés	HUN	– (–) –	29.39	Q
5	–	Ingeborg Løyning	NOR	– (–) –	29.73	Q
6	–	Kalia Antoniou	CYP	– (–) –	29.91
7	–	Tatiana Salcuțan	MDA	– (–) –	30.21
8	–	Gina Galloway	NZL	– (–) –	30.31

Heat Four

Pos	Lane	Swimmer	NOC	Time
1	–	Kaylee McKeown	AUS	– (–) –	28.17	Q
2	–	Rhyan White	USA	– (–) –	28.46	Q
3	–	Madison Broad	CAN	– (–) –	28.95	Q
4	–	Lila Touili	FRA	– (–) –	29.07	Q
5	–	Alena Semizhon	BLR	– (–) –	29.43	Q
6	–	Taydé Sansores	MEX	– (–) –	29.51	Q
7	–	Diana Nazarova	KAZ	– (–) –	29.72	Q
8	–	Lucija Šulenta	CRO	– (–) –	30.50

Heat Five

Pos	Lane	Swimmer	NOC	Time
1	–	Darya Vaskina	RUS	– (–) –	28.46	Q
2	–	Tamara Frías	ESP	– (–) –	28.89	Q
3	–	Anastasiya Shkurdai	BLR	– (–) –	29.35	Q
4	–	Malene Rypestøl	NOR	– (–) –	29.77
5	–	Chen Szu-Chi	TPE	– (–) –	30.02
6	–	Mariella Venter	RSA	– (–) –	30.15
7	–	Nea-Amanda Heinola	FIN	– (–) –	30.27
8	–	Karolina Jurczyk	POL	– (–) –	31.00

Semi-Finals (10 October 2018 — 18:05)

Top 8 advance to the final round.

Heat One (18:05)

Pos	Lane	Swimmer	NOC	Time
1	–	Rhyan White	USA	– (–) –	28.62	Q
2	–	Lila Touili	FRA	– (–) –	28.80	Q
3	–	Diana Nazarova	KAZ	– (–) –	28.86	Q
4	–	Tamara Frías	ESP	– (–) –	28.93	Q
5	–	Natalie Kan	HKG	– (–) –	29.09
6	–	Alena Semizhon	BLR	– (–) –	29.23
7	–	Peng Xuwei	CHN	– (–) –	29.49
8	–	Malene Rypestøl	NOR	– (–) –	29.81

Heat Two

Pos	Lane	Swimmer	NOC	Time
1	–	Kaylee McKeown	AUS	– (–) –	28.14	Q
2	–	Darya Vaskina	RUS	– (–) –	28.24	Q
3	–	Madison Broad	CAN	– (–) –	28.78	Q
4	–	Fernanda de Goeij	BRA	– (–) –	28.91	Q
5	–	Taydé Sansores	MEX	– (–) –	29.29
6	–	Ingeborg Løyning	NOR	– (–) –	29.76
7	–	Arina Baikova	LAT	– (–) –	29.86
8	–	Laura Ilyés	HUN	– (–) –	30.05

Final Round (11 October 2018 — 18:53)

Pos	Lane	Swimmer	NOC	Time
1	–	Kaylee McKeown	AUS	– (–) –	28.28
2	–	Darya Vaskina	RUS	– (–) –	28.38
3	–	Lila Touili	FRA	– (–) –	28.78
4	–	Rhyan White	USA	– (–) –	28.86
5	–	Fernanda de Goeij	BRA	– (–) –	28.91
6	–	Tamara Frías	ESP	– (–) –	29.01
7	–	Madison Broad	CAN	– (–) –	29.12
8	–	Diana Nazarova	KAZ	– (–) –	29.55