iRacing GT4 Calendar
7 matching series across 63 scheduled series-weeks, including 2 fixed-setup series. Browse every published week, track and race cadence.
2026 Season 4 · 7 seriess · 27 track configurations · 22 cars · 2 fixed-setup series
Categories: SPORTS CAR. Published week starts run from to . The most-scheduled configuration is Nürburgring Combined - Gesamtstrecke VLN, used for 10 series-weeks.
Series in this calendar
- Creventic Endurance Series - 2026 Season
- Ford Mustang Challenge by Skip Barber - 2026 Season 4
- GT4 Falken Tyre Challenge - 2026 Season 4
- IMSA Michelin Pilot Challenge - 2026 Season 4
- IMSA Sportscar Endurance Challenge - 2026 Season 4
- Nurburgring Endurance Championship - 2026 Season
- Sports Car Challenge by Falken Tyre - 2026 Season 4
2026 Season 4 schedule
| Week | Week starts | Series | Track | Race cadence | Length |
|---|---|---|---|---|---|
| 1 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 2 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 3 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 4 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 5 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 1 | Creventic Endurance Series - 2026 Season | Autodromo Internazionale del Mugello - Grand Prix | Races on Saturday at 1 & 13 GMT | Rolling 720 mins | |
| 6 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 360 mins | |
| 2 | Creventic Endurance Series - 2026 Season | Circuit de Spa-Francorchamps - Grand Prix Pits | Races on Saturday at 1 & 13 GMT | Rolling 720 mins | |
| 7 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 3 | Creventic Endurance Series - 2026 Season | Circuit de Barcelona Catalunya - Historic | Races on Saturday at 1 & 13 GMT | Rolling 720 mins | |
| 8 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 4 | Creventic Endurance Series - 2026 Season | Nürburgring Grand-Prix-Strecke - BES/WEC | Races on Saturday at 1 & 13 GMT | Rolling 720 mins | |
| 1 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every hour at :45 past | Rolling 15 mins | |
| 1 | GT4 Falken Tyre Challenge - 2026 Season 4 | Silverstone Circuit - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 1 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Silverstone Circuit - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 1 | IMSA Sportscar Endurance Challenge - 2026 Season 4 | Silverstone Circuit - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 2 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Oulton Park Circuit - Intl w/out Brittens | Races every hour at :45 past | Rolling 15 mins | |
| 2 | GT4 Falken Tyre Challenge - 2026 Season 4 | Indianapolis Motor Speedway - Road Course | Races every 2 hours at :30 past | Rolling 20 mins | |
| 2 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Indianapolis Motor Speedway - Road Course | Races every 2 hours at :30 past | Rolling 30 mins | |
| 5 | Creventic Endurance Series - 2026 Season | Circuit de Barcelona Catalunya - Historic | Races on Saturday at 1 & 13 GMT | Rolling 1440 mins | |
| 1 | IMSA Michelin Pilot Challenge - 2026 Season 4 | Indianapolis Motor Speedway - Road Course | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 3 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Mount Panorama Circuit | Races every hour at :45 past | Rolling 15 mins | |
| 3 | GT4 Falken Tyre Challenge - 2026 Season 4 | Brands Hatch Circuit - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 3 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Brands Hatch Circuit - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 2 | IMSA Sportscar Endurance Challenge - 2026 Season 4 | Brands Hatch Circuit - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 4 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every hour at :45 past | Rolling 15 mins | |
| 4 | GT4 Falken Tyre Challenge - 2026 Season 4 | Road Atlanta - Full Course | Races every 2 hours at :30 past | Rolling 20 mins | |
| 4 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Road Atlanta - Full Course | Races every 2 hours at :30 past | Rolling 30 mins | |
| 2 | IMSA Michelin Pilot Challenge - 2026 Season 4 | Road Atlanta - Full Course | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 9 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 5 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Charlotte Motor Speedway - Roval No Chicanes | Races every hour at :45 past | Rolling 15 mins | |
| 5 | GT4 Falken Tyre Challenge - 2026 Season 4 | Summit Point Raceway - Summit Point Raceway | Races every 2 hours at :30 past | Rolling 20 mins | |
| 5 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Summit Point Raceway - Summit Point Raceway | Races every 2 hours at :30 past | Rolling 30 mins | |
| 3 | IMSA Sportscar Endurance Challenge - 2026 Season 4 | Summit Point Raceway - Summit Point Raceway | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 6 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Tsukuba Circuit - 2000 Full | Races every hour at :45 past | Rolling 15 mins | |
| 6 | GT4 Falken Tyre Challenge - 2026 Season 4 | Charlotte Motor Speedway - Roval 2019 | Races every 2 hours at :30 past | Rolling 20 mins | |
| 6 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Charlotte Motor Speedway - Roval 2019 | Races every 2 hours at :30 past | Rolling 30 mins | |
| 3 | IMSA Michelin Pilot Challenge - 2026 Season 4 | Charlotte Motor Speedway - Roval 2019 | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 7 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Red Bull Ring - Grand Prix | Races every hour at :45 past | Rolling 15 mins | |
| 7 | GT4 Falken Tyre Challenge - 2026 Season 4 | Circuit Zolder - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 7 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Circuit Zolder - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 4 | IMSA Sportscar Endurance Challenge - 2026 Season 4 | Circuit Zolder - Alternate | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 8 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Motorsport Arena Oschersleben - Grand Prix | Races every hour at :45 past | Rolling 15 mins | |
| 8 | GT4 Falken Tyre Challenge - 2026 Season 4 | Circuito de Navarra - Speed Circuit | Races every 2 hours at :30 past | Rolling 20 mins | |
| 8 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Circuito de Navarra - Speed Circuit | Races every 2 hours at :30 past | Rolling 30 mins | |
| 4 | IMSA Michelin Pilot Challenge - 2026 Season 4 | Circuito de Navarra - Speed Circuit | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 10 | Nurburgring Endurance Championship - 2026 Season | Nürburgring Combined - Gesamtstrecke VLN | Races on Saturday at 7 & 17:00 GMT & Sunday at 0 & 13 GMT | Rolling 240 mins | |
| 9 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Miami International Autodrome - Grand Prix | Races every hour at :45 past | Rolling 15 mins | |
| 9 | GT4 Falken Tyre Challenge - 2026 Season 4 | Mobility Resort Motegi - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 9 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Mobility Resort Motegi - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 5 | IMSA Sportscar Endurance Challenge - 2026 Season 4 | Mobility Resort Motegi - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 10 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Road Atlanta - Full Course | Races every hour at :45 past | Rolling 15 mins | |
| 10 | GT4 Falken Tyre Challenge - 2026 Season 4 | Autodromo Nazionale Monza - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 10 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Autodromo Nazionale Monza - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 5 | IMSA Michelin Pilot Challenge - 2026 Season 4 | Autodromo Nazionale Monza - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 11 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Autodromo Internazionale Enzo e Dino Ferrari - Grand Prix | Races every hour at :45 past | Rolling 15 mins | |
| 11 | GT4 Falken Tyre Challenge - 2026 Season 4 | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 11 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 6 | IMSA Sportscar Endurance Challenge - 2026 Season 4 | Autódromo José Carlos Pace - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 12 | Ford Mustang Challenge by Skip Barber - 2026 Season 4 | Lime Rock Park - Classic | Races every hour at :45 past | Rolling 15 mins | |
| 12 | GT4 Falken Tyre Challenge - 2026 Season 4 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every 2 hours at :30 past | Rolling 20 mins | |
| 12 | Sports Car Challenge by Falken Tyre - 2026 Season 4 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every 2 hours at :30 past | Rolling 30 mins | |
| 6 | IMSA Michelin Pilot Challenge - 2026 Season 4 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins |