Swimming at the 2019 World Aquatics Championships – Women's 100 metre backstroke explained

Event:	Women's 100 metre backstroke
Championship:	2019 World Aquatics Championships
Dates:	22 July (heats and semifinals) 23 July (final)
Venue:	Nambu University Municipal Aquatics Center
Location:	Gwangju, South Korea
Competitors:	63
Nations:	55
Win Value:	58.60
Gold:	Kylie Masse
Gold Nation:	CAN
Silver:	Minna Atherton
Silver Nation:	AUS
Bronze:	Olivia Smoliga
Bronze Nation:	USA
Prev:	2017
Next:	2022

The Women's 100 metre backstroke competition at the 2019 World Championships was held on 22 and 23 July 2019.^[1] ^[2]

Records

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

The heats were held on 22 July at 10:00.^[3]

Rank	Heat	Lane	Time	Notes
1	6	4		Q
2	6	3		Q
3	5	3		Q
4	7	4		Q
5	7	5		Q
6	5	4		Q
7	7	6		Q
8	6	2		Q
9	6	5		Q
10	7	3	1:00.05	Q
11	7	7	1:00.15	Q
12	5	2	1:00.27	Q
13	5	5	1:00.38	Q
14	6	9	1:00.47	Q, NR
15	5	7	1:00.64	Q
16	6	6	1:00.66	Q
17	7	8	1:00.74
18	7	0	1:00.86
19	5	6	1:00.99
20	4	3	1:01.07	NR
21	4	4	1:01.08
22	6	7	1:01.19
23	7	1	1:01.22
24	5	8	1:01.25
25	7	9	1:01.26
26	5	1	1:01.39
27	5	0	1:01.40
28	6	1	1:01.45
29	4	1	1:01.49
30	4	0	1:01.53
31	4	8	1:01.66
32	5	9	1:01.77
33	3	1	1:01.81
34	6	0	1:01.95
35	4	2	1:02.24
36	4	7	1:02.71
37	4	5	1:02.86
38	3	7	1:02.94
39	3	5	1:02.95
40	4	9	1:03.08
41	3	4	1:03.26
42	3	3	1:03.46
43	2	4	1:03.66	NR
44	3	8	1:04.04
45	4	6	1:04.07
46	3	6	1:04.11
47	3	2	1:04.22
48	3	9	1:05.22
49	2	6	1:06.00
50	3	0	1:06.52
51	1	2	1:06.96
52	2	5	1:07.08
53	1	4	1:07.96	NR
54	2	3	1:08.37
55	1	3	1:08.41
56	2	2	1:09.85	NR
57	2	9	1:10.11
58	2	7	1:13.64
59	1	6	1:13.97
60	1	5	1:16.55
61	2	0	1:16.68
62	2	1	1:19.82
63	2	8	1:24.04
	6	8
	7	2

The semifinals were held on 22 July at 20:54.^[4]

Rank	Lane	Time	Notes
1	4	58.60	Q
2	3	58.83	Q
3	5	59.03	Q
4	8	59.46	Q
5	2	59.71	Q
6	6	59.79
7	7
8	1		NR

The final was held on 23 July at 20:51.^[5]