1986 Canadian Grand Prix
Race 6 of 16 in the 1986 Formula One World Championship
Race details
Date	15 June 1986
Official name	XXV Grand Prix du Canada
Location	Circuit Gilles Villeneuve Montreal, Quebec, Canada
Course	Temporary street circuit
Course length	4.410 km (2.740 miles)
Distance	69 laps, 304.290 km (189.077 miles)
Weather	Dry with temperatures approaching 25 °C (77 °F); wind speeds up to 20.5 km/h (12.7 mph)[1]
Pole position
Driver	Nigel Mansell	Williams-Honda
Time	1:24.118
Fastest lap
Driver	Nelson Piquet	Williams-Honda
Time	1:25.443 on lap 63 (lap record)
Podium
First	Nigel Mansell	Williams-Honda
Second	Alain Prost	McLaren-TAG
Third	Nelson Piquet	Williams-Honda
Lap leaders

The 1986 Canadian Grand Prix was a Formula One motor race held at Circuit Gilles Villeneuve, Montreal on 15 June 1986. It was the sixth race of the 1986 Formula One World Championship.

The 69-lap race was won from pole position by Briton Nigel Mansell, driving a Williams-Honda. Frenchman Alain Prost finished second in a McLaren-TAG, with Mansell's Brazilian teammate Nelson Piquet third. Prost took the lead of the Drivers' Championship by two points from Mansell and another Brazilian, Ayrton Senna, who finished fifth in his Lotus-Renault.

This would prove to be the final Canadian Grand Prix held on the circuit in its original configuration with the pits and start/finish straight coming out of the Epingle de Casino Hairpin. After a sponsorship dispute saw the race not held in 1987, a new pit complex was built at the other end of the circuit just before the Epingle de L'ile Hairpin with the circuit also being reprofiled to accommodate a new start/finish straight that would open in time for the 1988 race. The changes to the circuit would result in one less corner (down from 19 to 18), but also added an extra 20 metres of track.

Pos	No	Driver	Constructor	Q1	Q2	Gap
1	5	Nigel Mansell	Williams-Honda	1:28.829	1:24.118
2	12	Ayrton Senna	Lotus-Renault	1:27.422	1:24.188	+0.070
3	6	Nelson Piquet	Williams-Honda	1:28.588	1:24.384	+0.266
4	1	Alain Prost	McLaren-TAG	1:29.541	1:25.192	+1.074
5	25	René Arnoux	Ligier-Renault	1:30.200	1:25.224	+1.106
6	2	Keke Rosberg	McLaren-TAG	1:29.384	1:25.533	+1.415
7	20	Gerhard Berger	Benetton-BMW	1:29.471	1:26.439	+2.321
8	26	Jacques Laffite	Ligier-Renault	1:30.171	1:26.447	+2.329
9	7	Riccardo Patrese	Brabham-BMW	1:32.692	1:26.483	+2.365
10	8	Derek Warwick	Brabham-BMW	1:33.231	1:27.413	+3.295
11	27	Michele Alboreto	Ferrari	1:45.740	1:27.495	+3.377
12	18	Thierry Boutsen	Arrows-BMW	1:35.843	1:27.614	+3.496
13	15	Alan Jones	Lola-Ford	1:33.291	1:28.058	+3.940
14	16	Patrick Tambay	Lola-Ford	1:31.487	1:28.095	+3.977
15	19	Teo Fabi	Benetton-BMW	1:51.056	1:28.102	+3.984
16	11	Johnny Dumfries	Lotus-Renault	1:32.144	1:28.521	+4.403
17	4	Philippe Streiff	Tyrrell-Renault	1:32.307	1:28.639	+4.521
18	28	Stefan Johansson	Ferrari	1:28.881	1:29.078	+4.763
19	3	Martin Brundle	Tyrrell-Renault	1:34.233	1:29.111	+4.993
20	24	Alessandro Nannini	Minardi-Motori Moderni	1:35.789	1:29.653	+5.535
21	23	Andrea de Cesaris	Minardi-Motori Moderni	1:32.619	1:29.854	+5.736
22	14	Jonathan Palmer	Zakspeed	1:31.856	1:30.005	+5.887
23	21	Piercarlo Ghinzani	Osella-Alfa Romeo	1:36.575	1:31.479	+7.361
24	29	Huub Rothengatter	Zakspeed	1:46.280	1:32.113	+7.995
25	22	Christian Danner	Osella-Alfa Romeo	1:41.436	no time	+17.318

Pos	No	Driver	Constructor	Laps	Time/Retired	Grid	Points
1	5	Nigel Mansell	Williams-Honda	69	1:42:26.415	1	9
2	1	Alain Prost	McLaren-TAG	69	+ 20.659	4	6
3	6	Nelson Piquet	Williams-Honda	69	+ 36.262	3	4
4	2	Keke Rosberg	McLaren-TAG	69	+ 1:35.673	6	3
5	12	Ayrton Senna	Lotus-Renault	68	+ 1 lap	2	2
6	25	René Arnoux	Ligier-Renault	68	+ 1 lap	5	1
7	26	Jacques Laffite	Ligier-Renault	68	+ 1 lap	8
8	27	Michele Alboreto	Ferrari	68	+ 1 lap	11
9	3	Martin Brundle	Tyrrell-Renault	67	+ 2 laps	19
10	15	Alan Jones	Lola-Ford	66	+ 3 laps	13
11	4	Philippe Streiff	Tyrrell-Renault	65	+ 4 laps	17
12	29	Huub Rothengatter	Zakspeed	63	+ 6 laps	24
Ret	7	Riccardo Patrese	Brabham-BMW	44	Turbo	9
Ret	21	Piercarlo Ghinzani	Osella-Alfa Romeo	43	Gearbox	23
Ret	23	Andrea de Cesaris	Minardi-Motori Moderni	40	Gearbox	21
Ret	18	Thierry Boutsen	Arrows-BMW	38	Electrical	12
Ret	20	Gerhard Berger	Benetton-BMW	34	Turbo	7
Ret	28	Stefan Johansson	Ferrari	29	Accident	18
Ret	11	Johnny Dumfries	Lotus-Renault	28	Accident	16
Ret	14	Jonathan Palmer	Zakspeed	24	Engine	22
Ret	8	Derek Warwick	Brabham-BMW	20	Engine	10
Ret	24	Alessandro Nannini	Minardi-Motori Moderni	17	Turbo	20
Ret	19	Teo Fabi	Benetton-BMW	13	Battery	15
Ret	22	Christian Danner	Osella-Alfa Romeo	6	Turbo	25
DNS	16	Patrick Tambay	Lola-Ford	0	Accident in morning warmup	14
Source:[2]

Drivers' Championship standings Pos Driver Points 1 Alain Prost 29 2 Nigel Mansell 27 3 Ayrton Senna 27 4 Nelson Piquet 19 5 Keke Rosberg 14 Source: [3]

Constructors' Championship standings Pos Constructor Points 1 Williams-Honda 46 2 McLaren-TAG 43 3 Lotus-Renault 27 4 Ligier-Renault 13 5 Ferrari 10 Source: [3]

• Note: Only the top five positions are included for both sets of standings.