Swimming at the 2019 World Aquatics Championships – Women's 50 metre butterfly explained

Event:	Women's 50 metre butterfly
Championship:	2019 World Aquatics Championships
Dates:	26 July (heats and semifinals) 27 July (final)
Venue:	Nambu University Municipal Aquatics Center
Location:	Gwangju, South Korea
Competitors:	64
Nations:	58
Win Value:	25.02
Gold:	Sarah Sjöström
Gold Nation:	SWE
Silver:	Ranomi Kromowidjojo
Silver Nation:	NED
Bronze:	Farida Osman
Bronze Nation:	EGY
Prev:	2017
Next:	2022

The Women's 50 metre butterfly competition at the 2019 World Championships was held on 26 and 27 July 2019.^[1] ^[2]

Records

Prior to the competition, the existing world and championship records were as follows.

The heats were held on 26 July at 11:11.^[3]

Rank	Heat	Lane	Time	Notes
1	7	4	25.39	Q
2	6	4	25.70	Q
3	5	4	25.71	Q
4	5	3	25.73	Q
5	7	5	25.86	Q
6	7	3	25.97	Q
7	6	2	26.03	Q
8	7	6	26.07	Q
9	7	2	26.09	Q
10	6	6	26.13	Q
11	5	2	26.14	Q
11	6	1	26.14	Q
11	7	0	26.14	Q
14	5	5	26.23	Q
15	6	7	26.26	Q
16	6	3	26.32
16	6	5	26.32
18	5	6	26.40
19	7	1	26.45
20	5	7	26.62
21	5	1	26.64
22	6	8	26.65
23	4	5	26.70
24	7	8	26.75
25	5	9	26.89
25	7	7	26.89
27	5	0	26.92
28	4	2	26.93	NR
29	6	0	26.98
30	6	9	27.00
31	4	4	27.02
32	4	7	27.08
33	4	3	27.17
34	4	6	27.48
34	7	9	27.48
36	5	8	27.49
37	4	1	27.74
38	4	0	28.02
39	1	3	28.21
40	4	9	28.34
41	4	8	28.45
42	3	3	29.24
43	2	7	29.65
44	2	8	29.90
45	3	1	30.07
46	3	7	30.18
47	3	6	30.21
48	3	4	30.26
49	3	5	30.36
50	3	2	30.77
51	1	6	30.80
52	3	8	30.88
53	2	1	31.14
54	1	4	31.33
55	2	5	32.04
56	2	2	32.38
57	2	0	32.77
58	3	0	33.17
59	1	5	33.43
60	2	4	34.30
61	3	9	34.53
62	2	9	35.43
63	2	3	36.37
64	2	6	37.90

The swim-off was held on 26 July at 12:02.^[4]

Rank	Lane	Name	Nationality	Time	Notes
1	4			26.13	Q
2	5			26.24

The semifinals were held on 26 July at 21:09.^[5]

Rank	Lane	Time	Notes
1	4	24.79	Q
2	3	25.54	Q
3	5	25.79	Q
4	1	25.93	Q
5	2	26.01	Q
6	6	26.16
7	7	26.28
8	8	26.31

The final was started on 27 July at 20:02.^[6]