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

Event:	Women's 100 metre butterfly
Championship:	2017 World Aquatics Championships
Dates:	23 July (heats and semifinals) 24 July (final)
Venue:	Danube Arena
Location:	Budapest, Hungary
Competitors:	46
Nations:	40
Win Value:	55.53
Gold:	Sarah Sjöström
Gold Nation:	SWE
Silver:	Emma McKeon
Silver Nation:	AUS
Bronze:	Kelsi Worrell
Bronze Nation:	USA
Prev:	2015
Next:	2019

The Women's 100 metre butterfly competition at the 2017 World Championships was held on 23 and 24 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 23 July at 09:30.^[3]

Rank	Heat	Lane	Time	Notes
1	5	4		Q
2	3	4		Q
3	4	5		Q
4	3	5		Q
5	4	4		Q
6	4	6		Q
7	5	6		Q
8	5	3		Q
9	4	3		Q
10	3	3		Q
11	5	7		Q
12	4	7		Q
13	3	2		Q
14	5	5		Q
15	4	2		Q
16	5	1		Q
17	5	2
18	3	6
19	3	1
20	3	8
21	3	7
22	5	8
23	4	1
24	5	0
25	4	9	1:00.25
26	4	8	1:00.34
27	2	4	1:00.50
28	2	6	1:00.52
29	2	6	1:00.77
30	4	0	1:00.90
31	2	5	1:01.25
32	3	9	1:01.32
33	2	3	1:01.35	NR
34	5	9	1:01.71
35	2	2	1:01.80
36	2	1	1:02.84
37	2	8	1:03.38	NR
38	1	5	1:03.68	NR
39	2	0	1:04.94
40	1	6	1:06.19
41	1	8	1:07.99
42	1	2	1:08.33	NR
43	2	9	1:08.77
44	1	3	1:09.37
45	1	1	1:13.89
46	1	7	1:17.47
	1	4
	2	7

The semifinals were held on 23 July at 17:42.^[4]

Rank	Lane	Time	Notes
1	4	56.74	Q
2	5	56.89	Q
3	3	57.29	Q
4	6	57.64	Q
5	2	57.75
6	7	57.87
7	8	58.21
8	1	58.45

Rank	Lane	Time	Notes
1	4	55.77	Q
2	5	56.23	Q, = OC
3	3	57.07	Q
4	6	57.15	Q, NR
5	2	57.95
6	8	58.21
7	7	58.48
8	1	58.49

The final was held on 24 July at 17:40.^[5]