Swimming at the 2017 World Aquatics Championships – Women's 100 metre breaststroke explained

Event:	Women's 100 metre breaststroke
Championship:	2017 World Aquatics Championships
Dates:	24 July (heats and semifinals) 25 July (final)
Venue:	Danube Arena
Location:	Budapest, Hungary
Competitors:	54
Nations:	45
Win Value:	1:04.13 WR
Gold:	Lilly King
Gold Nation:	USA
Silver:	Katie Meili
Silver Nation:	USA
Bronze:	Yuliya Yefimova
Bronze Nation:	RUS
Prev:	2015
Next:	2019

The Women's 100 metre breaststroke competition at the 2017 World Championships was held on 24 and 25 July 2017.^[1] ^[2]

Records

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

The following new records were set during this competition.

The heats were held on 24 July at 10:00.^[3]

Rank	Heat	Lane	Name	Time	Notes
1	5	4		1:05.20	Q
2	6	4		1:05.60	Q
3	6	5		1:05.81	Q
4	4	4		1:06.39	Q
5	5	2		1:06.64	Q
6	4	3		1:06.85	Q
7	5	5		1:06.94	Q
8	6	2		1:07.10	Q
9	6	1		1:07.12	Q
10	4	6		1:07.20	Q
10	6	7		1:07.20	Q
12	6	3		1:07.33	Q,
13	4	5		1:07.35	Q
14	5	6		1:07.39	Q
15	4	1		1:07.43	Q
15	4	7		1:07.43	Q
17	4	2		1:07.48	Q
18	6	6		1:07.54
19	6	9		1:07.69
20	6	8		1:07.83
21	5	7		1:07.97
22	5	3		1:08.11
23	5	0		1:08.34
24	4	8		1:08.52
25	4	0		1:08.66
26	3	4		1:08.81	NR
26	5	8		1:08.81
28	6	0		1:09.91
29	3	5		1:10.11
30	5	9		1:10.13
31	4	9		1:10.16
32	5	1		1:10.30
33	3	3		1:10.49
34	3	2		1:10.89
35	3	6		1:11.61
36	2	5		1:12.65	NR
37	3	0		1:12.79	NR
38	2	3		1:14.11
39	3	7		1:14.13
40	3	9		1:14.14
41	1	5		1:15.99
42	3	8		1:16.70	NR
43	2	4		1:16.91
44	1	6		1:17.48	NR
44	3	1		1:17.48
46	1	4		1:18.70	NR
47	1	3	Jang Myong-gyong	1:18.87
48	2	6		1:18.91
49	2	2		1:21.47	NR
50	1	2		1:21.84	NR
51	2	0		1:23.03	NR
52	2	9		1:26.13	NR
53	2	8		1:28.92
—	2	1

The semifinals were started on 24 July at 17:58.^[4]

Rank	Lane	Time	Notes
1	4	1:04.53	Q
2	5	1:05.06	Q
3	6	1:06.47	Q
4	8	1:06.62	Q
5	7	1:06.81	Q
6	3	1:06.93
7	2	1:07.21
8	1	1:07.92

The final was held on 25 July at 19:17.^[5]