Heats

First 2 of each heat (Q) and the next 2 fastest (q) qualified for the semifinals.

Rank	Heat	Name	Nationality	Time	Notes
1	5	Jimisola Laursen	Sweden	46.18	Q, NR
2	5	Ioan Vieru	Romania	46.19	Q, NR
3	5	Cédric Van Branteghem	Belgium	46.39	q, NR
4	1	Marek Plawgo	Poland	46.46	Q
5	1	Tom Coman	Ireland	46.49	Q, NR
6	2	Jiří Mužík	Czech Republic	46.77	Q
7	1	Marc Foucan	France	46.91	q
8	3	Piotr Rysiukiewicz	Poland	46.92	Q
9	4	Bastian Swillims	Germany	46.96	Q
10	1	Karel Blaha	Czech Republic	47.01
11	2	David McCarthy	Ireland	47.07	Q
12	3	Dmitriy Chumichkin	Azerbaijan	47.15	Q, NR
13	3	Ashraf Saber	Italy	47.20
14	5	Anastasios Gousis	Greece	47.35	SB
15	1	Alberto Martínez	Spain	47.39
15	2	Yevgeniy Lebedev	Russia	47.39
15	4	Salvador Rodríguez	Spain	47.39	Q
18	2	Marcel Lopuchovský	Slovakia	47.40	SB
19	4	Dmitrijs Miļkevičs	Latvia	47.61	PB
20	4	Artur Gąsiewski	Poland	47.62
21	5	Robert Daly	Ireland	47.75
22	2	Christian Birk	Denmark	48.09
23	3	Inguns Sviklins	Latvia	48.46	SB
24	4	Stelios Dimotsios	Greece	48.51
	3	David Canal	Spain	DQ
	4	Aleksandr Usov	Russia	DQ
	3	Dmitriy Golovastov	Russia	DNF
	5	Andreas Rechbauer	Austria	DNF
	2	Matija Šestak	Slovenia	DNS

Semifinals

First 3 of each semifinal qualified directly (Q) for the final.

Rank	Heat	Name	Nationality	Time	Notes
1	2	Marek Plawgo	Poland	45.49	Q, CR, NR
2	2	Ioan Vieru	Romania	45.94	Q, NR
3	1	Jimisola Laursen	Sweden	46.00	Q, NR
4	1	Piotr Rysiukiewicz	Poland	46.28	Q, PB
5	2	Jiří Mužík	Czech Republic	46.32	Q, PB
6	2	Tom Coman	Ireland	46.34	NR
7	1	Marc Foucan	France	46.49	Q, PB
8	1	Bastian Swillims	Germany	46.54
9	1	David McCarthy	Ireland	46.86
10	2	Cédric Van Branteghem	Belgium	46.95
11	2	Salvador Rodríguez	Spain	47.01
	1	Dmitriy Chumichkin	Azerbaijan	DNS

Final

Rank	Lane	Name	Nationality	Time	Notes
	5	Marek Plawgo	Poland	45.39	CR, NR
	6	Jimisola Laursen	Sweden	45.59	NR
	3	Ioan Vieru	Romania	46.17
4	4	Piotr Rysiukiewicz	Poland	46.32
5	2	Jiří Mužík	Czech Republic	46.36
6	1	Marc Foucan	France	47.40