Heats

Qualification: First 3 in each heat (Q) and the next 3 fastest (q) qualified for the semifinals.

Rank	Heat	Name	Nationality	Time	Notes
1	2	Fred Samoei	Kenya	1:46.23	Q
2	2	Ahmed Mainy	Morocco	1:47.65	Q, PB
3	2	Anis Ananenka	Belarus	1:48.95	Q
4	4	Vitalij Kozlov	Lithuania	1:49.74	Q
5	4	Lachlan Renshaw	Australia	1:49.77	Q
6	4	Ryan Martin	United States	1:49.90	Q
7	4	Tommy Granlund	Sweden	1:49.99	q
8	2	Abdelmadjed Touil	Algeria	1:50.13	q
9	6	Joe Thomas	Great Britain	1:50.18	Q
10	5	Vyacheslav Sokolov	Russia	1:50.20	Q
11	5	Lutimar Paes	Brazil	1:50.26	Q
12	6	James Kaan	Australia	1:50.37	Q
13	5	Tlou Seloba	South Africa	1:50.41	Q
14	6	Otlaadisa Segosebe	Botswana	1:50.41	Q, PB
15	6	Roman Fosti	Estonia	1:50.94	q
16	1	Sören Ludolph	Germany	1:50.98	Q
17	1	André Olivier	South Africa	1:51.02	Q
18	1	Cihat Ulus	Turkey	1:51.09	Q
19	3	Teng Haining	China	1:51.21	Q
20	3	Rafith Rodríguez	Colombia	1:51.24	Q
21	1	Vid Tršan	Slovenia	1:51.32
22	7	Mahfoud Brahimi	Algeria	1:51.36	Q
23	7	Oleksandr Osmolovych	Ukraine	1:51.59	Q
24	6	Jowayne Hibbert	Jamaica	1:51.81
25	3	Sajjad Moradi	Iran	1:51.88	Q
26	4	Mohd Jironi Riduan	Malaysia	1:51.90	SB
27	5	Ivan Obezchik	Kazakhstan	1:52.04
28	3	Edgar Cortez	Nicaragua	1:52.05
29	5	Moslem Niadoost	Iran	1:52.08
30	7	Casimir Loxsom	United States	1:52.09	Q
31	3	Jaden Ostapowich	Canada	1:52.18
32	7	Dušan Babić	Bosnia and Herzegovina	1:52.39
33	6	Alex Ngouari-Mouissi	Republic of the Congo	1:52.66	PB
34	2	Ragnar Lipp	Estonia	1:52.72	SB
35	7	Farkhod Kuralov	Tajikistan	1:52.82
36	2	Mervin Guarte	Philippines	1:53.32
37	2	Matias Reedtz	Denmark	1:53.47
38	2	Julio Pérez	Peru	1:53.71
39	1	Nimet Gashi	Albania	1:55.38	PB
40	7	Lee Mooyong	South Korea	1:55.60
41	3	Merab Kinnidze	Georgia	1:55.66
42	4	Marius Schneider	Norway	1:56.46
43	5	Benjamin Njia	Uganda	1:56.76
44	1	Varasiko Tomeru	Fiji	1:57.31
45	7	Seymour Walter	United States Virgin Islands	1:58.16
46	4	Christopher Svensson	Sweden	1:58.36
47	4	Said Al-Mandhari	Oman	1:59.26
48	6	Khalid Mohhamed Hazazi	Saudi Arabia	2:00.02
49	5	Qais Al-Rawahi	Oman	2:00.20
50	3	Charlton Sunter	Netherlands Antilles	2:03.26
51	1	Moussargue Tchoumgoyo	Chad	2:06.93
	5	Md Abdul Momin Mamun	Bangladesh	DNS

Semifinals

Qualification: First 2 in each heat (Q) and the next 2 fastest (q) qualified for the final.

Rank	Heat	Name	Nationality	Time	Notes
1	2	Fred Samoei	Kenya	1:46.91	Q
2	2	Casimir Loxsom	United States	1:47.10	Q
3	2	Vyacheslav Sokolov	Russia	1:47.15	q
4	2	Teng Haining	China	1:47.27	q, PB
5	2	André Olivier	South Africa	1:47.48
6	2	Ahmed Mainy	Morocco	1:47.54	PB
7	1	Sören Ludolph	Germany	1:47.98	Q
8	1	Lachlan Renshaw	Australia	1:48.03	Q
8	3	Lutimar Paes	Brazil	1:48.03	Q
10	3	Ryan Martin	United States	1:48.07	Q
11	3	Sajjad Moradi	Iran	1:48.10
12	3	Mahfoud Brahimi	Algeria	1:48.11
13	1	Rafith Rodríguez	Colombia	1:48.17
14	2	Vitalij Kozlov	Lithuania	1:48.29
15	1	Abdelmadjed Touil	Algeria	1:48.92
16	1	Joe Thomas	Great Britain	1:49.04
17	1	Tommy Granlund	Sweden	1:49.09
18	2	James Kaan	Australia	1:49.41
19	3	Oleksandr Osmolovych	Ukraine	1:49.46
20	1	Anis Ananenka	Belarus	1:49.53
21	1	Otlaadisa Segosebe	Botswana	1:49.81	PB
22	3	Cihat Ulus	Turkey	1:50.30
23	3	Roman Fosti	Estonia	1:50.77
24	3	Tlou Seloba	South Africa	1:53.81

Final

Rank	Name	Nationality	Time	Notes
	Lachlan Renshaw	Australia	1:46.36
	Teng Haining	China	1:46.62	PB
	Fred Samoei	Kenya	1:46.72
4	Casimir Loxsom	United States	1:46.73
5	Lutimar Paes	Brazil	1:47.23
6	Vyacheslav Sokolov	Russia	1:47.80
7	Sören Ludolph	Germany	1:48.33
8	Ryan Martin	United States	1:51.89