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| Date | Sunday 15 March 1981 |
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| Start time | 14:00 |
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| Event |  US West GP |
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| Circuit | Long Beach |
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| Event Format | Race of 80 laps |
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| Championship | World Championship |
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| Race number | #1 of 15 in 1981
#343 (of all time) |
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| Laps | 80 |
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| Circuit Perimeter | 3251 m |
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| Race Distance | 3251 × 80 + 1625 = 261.705 km |
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| Grid Format | 2-2-2-2 (staggered) |
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| Pole Position | Right |
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| First Corner | Right |
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| Track Direction | Clockwise |
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| Weather | Sunny, Hot, Dry |
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| Entries | 29 |
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| Qualifiers | 24 |
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| Finishers | 8 |
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| Debutants | Chico Serra (Driver),
Miguel Angel Guerra (Driver),
Siegfried Stohr (Driver),
Alfa Romeo 179C (Car Model),
Brabham BT49C (Car Model),
Ensign N180B (Car Model),
Ferrari 126CK (Car Model),
Fittipaldi F8C (Car Model),
Ligier JS17 (Car Model),
March 811 (Car Model),
McLaren M29F (Car Model),
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Renault RE20B (Car Model),
Theodore TY01 (Car Model),
Williams FW07C (Car Model),
Ensign Racing (Entrant),
Equipe Talbot Gitanes (Entrant),
March Grand Prix Team (Entrant),
Marlboro McLaren International (Entrant),
Ragno Arrows Beta Racing Team (Entrant),
Theodore Racing Team (Entrant),
Tyrrell Racing Team (Entrant)
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| Milestones | Car 29 – 1st Pole Position (Car Number)
Car 30 – 200th Race Entry (Car Number)
Ragno Arrows Beta Racing Team – 1st Pole Position (Entrant)
 Arrows – 1st Pole Position (Car Manufacturer)
 Riccardo Patrese – 1st Pole Position (Driver)
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| Records Broken |
1. Most 21st Place Qualifications –  Jan Lammers (8)
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| Records Extended |
1. Most Retirements – Lotus (389),
2. Most Race Entries – Lotus (894),
3. Most 5th Place Qualifications – Ferrari (83),
4. Most 13th Place Qualifications – Lotus (44)
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