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iRacing Calendar
2026 Season 4

IMSA iRacing Series - Fixed by GO Fast

Sports Car
12 weeks
Week 1 active
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: 4
Class B 4.0 --> Pro/WC 4.0Races every 2 hours at :45 past

Season Timeline

Week 1Week 12

Full Schedule

1

Indianapolis Motor Speedway - Road Course

Sep 15 — Sep 2135 min

71°F/22°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

2

Road Atlanta - Full Course

Sep 22 — Sep 2835 min

83°F/28°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

3

Fuji International Speedway - Grand Prix

Sep 29 — Oct 535 min

69°F/21°C, Rain chance None (4% before session), Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

4

Red Bull Ring - Grand Prix

Oct 6 — Oct 1235 min

67°F/19°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

5

Long Beach Street Circuit

Oct 13 — Oct 1935 min

75°F/24°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

6

Circuit Gilles Villeneuve

Oct 20 — Oct 2635 min

65°F/19°C, Rain chance 26% (10% before session), Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

7

Circuit des 24 Heures du Mans - 24 Heures du Mans

Oct 27 — Nov 235 min

68°F/20°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

8

Autódromo Hermanos Rodríguez - Grand Prix

Nov 3 — Nov 935 min

69°F/20°C, Rain chance 15% (100% before session), Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

9

Suzuka International Racing Course - Grand Prix

Nov 10 — Nov 1635 min

70°F/21°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

10

Silverstone Circuit - Grand Prix

Nov 17 — Nov 2335 min

65°F/19°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

11

Sebring International Raceway - International

Nov 24 — Nov 3035 min

78°F/26°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%

12

Autodromo Nazionale Monza - Grand Prix

Dec 1 — Dec 735 min

66°F/19°C, Rain chance None, Forecast regenerated for each race, Grid by class, Rolling start, Local enforced cautions, Qual scrutiny - Moderate. PGTP: fuel: 50% BMWGTP: fuel: 50% F499P: fuel: 50% AMGTPV: fuel: 50% CGTP: fuel: 50% AGTP: fuel: 50% P217: fuel: 68% MGT3E: fuel: 50% 720GT3: fuel: 50% F296: fuel: 50% AMGT3: fuel: 50% NSXE22: fuel: 50% M4GT3: fuel: 50% LGT3: fuel: 50% CZ06: fuel: 50% 992R: fuel: 50% FMGT3: fuel: 50%