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iRacing Calendar2026 Season 1
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IMSA Endurance Series

Sports Car
6 weeks
Week 5 active
Car: Porsche 963 GTP, BMW M Hybrid V8, Ferrari 499P, Cadillac V-Series.R

Season Timeline

Week 1Week 6

Full Schedule

1

Autódromo Hermanos Rodríguez - Grand Prix

Dec 20 — Dec 26

72°F/22°C, Rain chance None, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

2

Circuit des 24 Heures du Mans - 24 Heures du Mans

Jan 3 — Jan 9

66°F/19°C, Rain chance None, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

3

Red Bull Ring - Grand Prix

Jan 17 — Jan 23

65°F/18°C, Rain chance 30%, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

4

Watkins Glen International - Boot

Jan 31 — Feb 6

68°F/20°C, Rain chance None, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

5

Road America - Full Course

Feb 14 — Feb 20

65°F/18°C, Rain chance None, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins

6

Autodromo Nazionale Monza - Grand Prix

Feb 28 — Mar 6

67°F/19°C, Rain chance 25%, Grid by class, Rolling start, Local enforced cautions, Min 1 driver, Max 16 drivers, Drive Fair Share - Declare drivers, Qual scrutiny - Strict. mins