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iR
iRacing Calendar
2026 Season 4

IMSA Endurance Series

Sports Car
6 weeks
Car: Porsche 963 GTP, BMW M Hybrid V8 (Evo), Ferrari 499P, Aston Martin Valkyrie AMR-LMH, Cadillac V-Series.R GTP, Acura ARX-06 GTP, Dallara P217, Mercedes-AMG GT3 2020, McLaren 720S GT3 EVO, Ferrari 296 GT3, Aston Martin Vantage GT3 EVO, Acura NSX GT3 EVO 22, BMW M4 GT3 EVO, Lamborghini Huracán GT3 EVO, Chevrolet Corvette Z06 GT3.R, Porsche 911 GT3 R (992), Ford Mustang GT3
Drops: 2
Class C 4.0 --> Pro/WC 4.0, Team racingRaces every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT

Season Timeline

Week 1Week 6

Full Schedule

1

Road Atlanta - Full Course

Sep 19 — Sep 25

82°F/28°C, All dry events, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. PGTP: 3.0kg BMWGTP: fuel: 99% AMGTPV: fuel: 98% CGTP: -5.0kg, pwr: -0.50% AGTP: fuel: 99%, 2.0kg MGT3E: fuel: 98%, -5.0kg, pwr: - 0.50% 720GT3: -5.0kg F296: fuel: 98%, 8.0kg, pwr: -0.25% AMGT3: fuel: 97%, 10.0kg NSXE22: fuel: 98% M4GT3: fuel: 98%, 10.0kg, pwr: - 1.00% LGT3: fuel: 97%, pwr: -0.50% CZ06: fuel: 98%, 3.0kg, pwr: -0.25% 992R: fuel: 98%, -10.0kg FMGT3: -5.0kg mins

2

Fuji International Speedway - Grand Prix

Oct 3 — Oct 9

68°F/20°C, Rain chance 29%, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

3

Long Beach Street Circuit

Oct 17 — Oct 23

68°F/20°C, All dry events, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

4

Circuit des 24 Heures du Mans - 24 Heures du Mans

Oct 31 — Nov 6

72°F/22°C, All dry events, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

5

Suzuka International Racing Course - Grand Prix

Nov 14 — Nov 20

66°F/19°C, Rain chance 32%, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

6

Sebring International Raceway - International

Nov 28 — Dec 4

78°F/25°C, All dry events, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins