Athletics at the 1986 Commonwealth Games
Track events
100 m	men	women
200 m	men	women
400 m	men	women
800 m	men	women
1500 m	men	women
3000 m		women
5000 m	men
10,000 m	men	women
100 m hurdles		women
110 m hurdles	men
400 m hurdles	men	women
3000 m steeplechase	men
4×100 m relay	men	women
4×400 m relay	men	women
Road events
Marathon	men	women
30 km walk	men
Field events
High jump	men	women
Pole vault	men
Long jump	men	women
Triple jump	men
Shot put	men	women
Discus throw	men	women
Hammer throw	men
Javelin throw	men	women
Combined events
Heptathlon		women
Decathlon	men

The men's 400 metres event at the 1986 Commonwealth Games was held on 26 and 27 July at the Meadowbank Stadium in Edinburgh.^[1]

Gold	Silver	Bronze
Roger Black  England	Darren Clark  Australia	Phil Brown  England

Qualification: First 4 of each heat (Q) and the next 4 fastest (q) qualified for the semifinals.^[2]

Rank	Heat	Name	Nationality	Time	Notes
1	2	Darren Clark	Australia	46.12	Q
2	1	Roger Black	England	46.66	Q
3	3	Brian Whittle	Scotland	46.69	Q
4	3	Phil Brown	England	46.78	Q
5	2	Kriss Akabusi	England	46.84	Q
6	1	Bruce Frayne	Australia	46.99	Q
7	3	David Johnston	Australia	47.13	Q
8	2	Andre Smith	Canada	47.21	Q
9	1	Anton Skerritt	Canada	47.53	Q
10	2	Martin Johnston	Scotland	48.19	Q
11	3	Michael Guegan	Jersey	48.40	Q
12	1	Joseph Rodan	Fiji	49.41	Q
13	3	Reuben Kaiaha Wotu	Vanuatu	49.44	q
14	2	Odiya Silweya	Malawi	49.45	q
15	3	Zacharia Machangani	Botswana	49.75	q
16	1	Brian Nicoll	Scotland	49.91	q
17	1	John Chappory	Gibraltar	50.65
18	2	Avelino Baldachino	Gibraltar	51.55
	1	Georges Taniel	Vanuatu	DNS

Qualification: First 4 of each semifinal qualified directly (Q) for the final.^[3]

Rank	Heat	Name	Nationality	Time	Notes
1	2	Bruce Frayne	Australia	47.09	Q
2	1	Kriss Akabusi	England	47.15	Q
3	2	David Johnston	Australia	47.22	Q
4	2	Roger Black	England	47.27	Q
5	2	Brian Whittle	Scotland	47.56	Q
6	1	Darren Clark	Australia	47.61	Q
7	1	Phil Brown	England	47.72	Q
8	2	Anton Skerritt	Canada	47.74
9	1	Andre Smith	Canada	47.96	Q
10	1	Martin Johnston	Scotland	48.57
11	2	Michael Guegan	Jersey	48.80
12	2	Odiya Silweya	Malawi	49.56
13	1	Brian Nicoll	Scotland	50.07
14	2	Zacharia Machangani	Botswana	50.09
15	1	Joseph Rodan	Fiji	50.30
16	1	Reuben Kaiaha Wotu	Vanuatu	51.08

Rank	Lane	Name	Nationality	Time	Notes
	6	Roger Black	England	45.57
	8	Darren Clark	Australia	45.98
	2	Phil Brown	England	46.80
4	3	Kriss Akabusi	England	46.83
5	1	Brian Whittle	Scotland	47.10
6	4	David Johnston	Australia	47.24
7	5	Bruce Frayne	Australia	47.29
8	7	Andre Smith	Canada	47.97