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Women's 100 metre backstroke
at the Games of the XXXIII Olympiad
Women's 100 metre backstroke; at the Games of the XXXIII Olympiad
Venue	Olympic Aquatics Centre,; Paris La Défense Arena
Dates	29 July 2024 (heats and semifinals); 30 July 2024 (final)
Competitors	36 from 29 nations
Winning time	57.33
Medalists
	← 2020 2028 →

The women's 100 metre backstroke event at the 2024 Summer Olympics was held from 29 to 30 July 2024 at the Paris Aquatics Centre.^[1]

Records

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

World record	Regan Smith (USA)	57.13	Indianapolis, United States	18 June 2024
Olympic record	Kaylee McKeown (AUS)	57.47	Tokyo, Japan	27 July 2021

The following record was established during the competition:

Date	Event	Swimmer	Nation	Time	Record
30 July	Final	Kaylee McKeown	Australia	57.33	OR
4 August	Final*	Regan Smith	United States	57.28	OR

* Split from the women's 4 × 100 m medley relay

Qualification

Each National Olympic Committee (NOC) was permitted to enter a maximum of two qualified athletes in each individual event, but only if both of them had attained the Olympic Qualifying Time (OQT).^[2] For this event, the OQT was 59.99 seconds. World Aquatics then filled the rest of the event places with athletes qualifying through universality; NOCs were given one event entry for each gender, which could be used by any athlete regardless of qualification time, providing the spaces had not already been taken by athletes from that nation who had achieved the OQT.^[2]^[3] In total, 20 athletes qualified through achieving the OQT, while 16 athletes qualified through universality places.^[3]

Competition format

The competition consists of three rounds: heats, semifinals, and a final. The swimmers with the best 16 times in the heats advance to the semifinals. The swimmers with the best 8 times in the semifinals advance to the final. Swim-offs are used as necessary to break ties for advancement to the next round.

Schedule

All times are Central European Summer Time (UTC+2)^[1]

Date	Time	Round
29 July 2024	10:00	Heats
29 July 2024	19:37	Semifinals
30 July 2024	17:30	Final

Results

Heats

Results^[4]
Rank	Heat	Lane	Swimmer	Nation	Time	Notes
1	3	4	Katharine Berkoff	United States	57.99	Q
2	5	4	Regan Smith	United States	58.45	Q
3	4	4	Kaylee McKeown	Australia	58.48	Q
4	5	5	Kylie Masse	Canada	59.06	Q
5	3	5	Emma Terebo	France	59.10	Q
6	5	6	Béryl Gastaldello	France	59.31	Q
7	4	5	Iona Anderson	Australia	59.37	Q
8	4	2	Carmen Weiler	Spain	59.57	Q, NR
9	4	7	Roos Vanotterdijk	Belgium	59.68	Q
10	3	7	Kira Toussaint	Netherlands	59.84	Q
11	4	3	Wan Letian	China	59.87	Q
12	5	3	Ingrid Wilm	Canada	1:00.06	Q
13	5	2	Maaike de Waard	Netherlands	1:00.12	Q
14	4	6	Wang Xue'er	China	1:00.15	Q
15	4	1	Louise Hansson	Sweden	1:00.26	Q
16	3	3	Danielle Hill	Ireland	1:00.40	Q
17	5	7	Adela Piskorska	Poland	1:00.47
18	3	2	Kathleen Dawson	Great Britain	1:00.69
19	3	6	Medi Eira Harris	Great Britain	1:00.85
20	5	1	Anastasiya Shkurdai	Individual Neutral Athletes	1:00.94
21	3	1	Celia Pulido	Mexico	1:01.10
22	5	8	Nika Sharafutdinova	Ukraine	1:01.47
23	4	8	Emma Harvey	Bermuda	1:01.78
24	3	8	Gabriela Georgieva	Bulgaria	1:02.16
25	2	5	Aviv Barzelay	Israel	1:02.30
26	2	4	Xeniya Ignatova	Kazakhstan	1:02.51
27	2	6	Zuri Ferguson	Trinidad and Tobago	1:02.75
28	2	2	Lucero Mejía	Guatemala	1:03.42
29	2	3	Cindy Cheung	Hong Kong	1:03.45
30	1	4	Ganga Senavirathne	Sri Lanka	1:04.26
31	2	8	Amani Al-Obaidli	Bahrain	1:04.27
32	2	1	Celina Márquez	El Salvador	1:04.55
33	2	7	Elizabeth Jiménez	Dominican Republic	1:04.99
34	1	3	Denise Donelli	Mozambique	1:08.73
35	1	5	Aýnura Primowa	Turkmenistan	1:10.17
36	1	6	Maleek Al-Mukhtar	Libya	1:10.99

Semifinals

The swimmers with the best 8 times, regardless of heat, advanced to the final.

Results^[5]
Rank	Heat	Lane	Swimmer	Nation	Time	Notes
1	1	4	Regan Smith	United States	57.97	Q
2	2	5	Kaylee McKeown	Australia	57.99	Q
3	2	4	Katharine Berkoff	United States	58.27	Q
4	2	6	Iona Anderson	Australia	58.63	Q
5	1	5	Kylie Masse	Canada	58.82	Q
6	1	7	Ingrid Wilm	Canada	59.10	Q
7	1	3	Béryl Gastaldello	France	59.29	Q
8	2	3	Emma Terebo	France	59.50	Q
9	1	6	Carmen Weiler	Spain	59.72
10	2	2	Roos Vanotterdijk	Belgium	59.86
11	1	1	Wang Xue'er	China	59.89
12	2	7	Wan Letian	China	1:00.06
13	2	1	Maaike de Waard	Netherlands	1:00.22
14	1	2	Kira Toussaint	Netherlands	1:00.37
15	2	8	Louise Hansson	Sweden	1:00.47
16	1	8	Danielle Hill	Ireland	1:00.80

Final

Results^[6]
Rank	Lane	Swimmer	Nation	Time	Notes
	5	Kaylee McKeown	Australia	57.33	OR, =OC
	4	Regan Smith	United States	57.66
	3	Katharine Berkoff	United States	57.98
4	2	Kylie Masse	Canada	58.29
5	6	Iona Anderson	Australia	58.98
6	7	Ingrid Wilm	Canada	59.25
7	8	Emma Terebo	France	59.40
8	1	Béryl Gastaldello	France	59.80

Statistics^[7]
Name	15 metre split (s)	50 metre split (s)	50–65 metre split (s)	Time (s)	Stroke rate (strokes/min)
Kaylee McKeown	6.67	28.08	7.52	57.33	48.2
Regan Smith	6.69	28.02	7.45	57.66	53.1
Katharine Berkoff	6.75	28.05	7.39	57.98	53.8
Kylie Masse	6.81	28.02	7.70	58.29	50.8
Iona Anderson	7.17	28.47	8.09	58.98	50.7
Ingrid Wilm	6.87	28.69	8.07	59.25	44.2
Emma Terebo	7.18	28.79	8.39	59.40	49.0
Béryl Gastaldello	6.86	28.80	8.06	59.80	49.2