Swimming at the 2011 World Aquatics Championships – Women's 50 metre freestyle explained

Event:	Women's 50 metre freestyle
Competition:	2011 World Aquatics Championships
Dates:	July 30, 2011 (heats and semifinals) July 31, 2011 (final)
Competitors:	95
Nations:	85
Win Value:	24.14
Gold:	Therese Alshammar
Goldnoc:	SWE
Silver:	Ranomi Kromowidjojo
Silvernoc:	NED
Bronze:	Marleen Veldhuis
Bronzenoc:	NED
Prev:	2009
Next:	2013

The women's 50 metre freestyle competition of the swimming events at the 2011 World Aquatics Championships was held on July 30 with the heats and the semifinals and July 31 with the final.

Records

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

87 swimmers participated in 12 heats.^[1]

Rank	Heat	Lane	Time	Notes
1	11	4	24.82	Q
1	11	5	24.82	Q
3	12	5	24.85	Q
4	10	5	24.86	Q
5	10	4	25.01	Q
6	12	4	25.03	Q
7	11	8	25.05	Q
7	12	3	25.05	Q
9	10	3	25.11	Q
9	12	6	25.11	Q
11	10	8	25.13	Q
12	10	6	25.18	Q
13	12	2	25.23	Q
14	11	6	25.24	Q
15	9	3	25.28	Q, NR
16	10	7	25.34	Q
17	12	7	25.41
18	12	8	25.47
19	9	5	25.50
20	12	1	25.54
21	9	8	25.57
21	11	1	25.57
23	9	6	25.79
24	9	7	25.82
25	10	2	25.89
25	10	1	25.89
27	8	6	26.01	NR
28	8	5	26.04
29	9	2	26.09
30	9	1	26.12
31	8	4	26.14
32	8	2	26.19
33	8	7	26.20	NR
34	8	3	26.22
35	8	8	26.46
36	8	1	26.83
37	7	6	26.91
38	7	3	27.01
39	6	5	27.08
40	7	7	27.11
41	7	4	27.15
42	7	2	27.21
43	7	8	27.38
44	7	1	27.46
45	7	5	27.56
46	6	3	27.71
47	6	4	27.76
48	6	6	28.18
49	5	5	28.19
50	9	4	28.20
51	6	7	28.34
52	5	4	28.35
53	5	7	28.43
54	6	8	28.51
55	6	1	28.71
56	5	3	29.16
57	5	8	29.33
58	5	6	29.59
59	6	2	29.79
60	5	1	29.94
61	5	2	30.01
62	4	2	30.60
63	3	2	30.83
64	3	6	30.84
65	4	3	30.94
66	4	7	31.07
67	4	5	31.38
68	3	3	31.41
68	4	1	31.41
70	4	6	31.45
71	4	8	32.40
72	3	8	32.44
73	3	1	33.17
74	3	5	33.43
75	2	6	33.54
76	3	4	33.98
77	2	2	34.45
78	2	7	35.11
79	2	4	35.99
80	1	5	37.07
81	2	1	38.15
82	2	3	38.38
83	2	5	38.40
84	1	3	43.36
85	2	8	44.43
86	1	2	44.60
87	4	4	49.75	NR
–	1	1		DNS
–	1	4		DNS
-	1	6		DNS
–	1	7		DNS
–	1	8		DNS
–	3	7		DNS
-	11	3		DNS
–	11	7		DNS

The semifinals were held at 18:57.^[2]

Rank	Lane	Time	Notes
1	1	24.61	Q NR
2	4	24.63	Q
3	5	24.69	Q
4	3	24.88	Q
5	8	25.05	Q NR
6	2	25.14
7	7	25.22
8	6	25.23

The final was held at 18:20.^[3]