iRacing Prototype Calendar
10 matching series across 102 scheduled series-weeks, including 2 fixed-setup series. Browse every published week, track and race cadence.
2026 Season 3 · 10 seriess · 31 track configurations · 28 cars · 2 fixed-setup series
Categories: SPORTS CAR. Published week starts run from to . The most-scheduled configuration is Circuit des 24 Heures du Mans - 24 Heures du Mans, used for 8 series-weeks.
Series in this calendar
- Global Endurance Tour - 2026 Season 3
- IMSA Endurance Series - 2026 Season 3
- IMSA iRacing Series - 2026 Season 3
- IMSA iRacing Series - Fixed - 2026 Season 3
- IMSA Sportscar Endurance Challenge - 2026 Season 3
- LMP2 Challenge - 2026 Season 3 - Fixed
- LMP3 Trophy - 2026 Season 3
- Proto-GT Challenge 2026 Season 3
- Radical Esports Cup - 2026 Season 3
- Sports Car Challenge by Falken Tyre - 2026 Season 3
2026 Season 3 schedule
| Week | Week starts | Series | Track | Race cadence | Length |
|---|---|---|---|---|---|
| 1 | IMSA iRacing Series - 2026 Season 3 | Watkins Glen International - Boot | Races every 2 hours at :45 past | Rolling 45 mins | |
| 1 | IMSA iRacing Series - Fixed - 2026 Season 3 | Watkins Glen International - Boot | Races every 2 hours at :45 past | Rolling 35 mins | |
| 1 | LMP2 Challenge - 2026 Season 3 - Fixed | Watkins Glen International - Boot | Races every 2 hours at :00 | Rolling 20 mins | |
| 1 | LMP3 Trophy - 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :30 past | Rolling 20 mins | |
| 1 | Proto-GT Challenge 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :45 past | Rolling 30 mins | |
| 1 | Radical Esports Cup - 2026 Season 3 | Road America - Full Course | Races every 2 hours on the hour | Standing 12 laps | |
| 1 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :30 past | Rolling 30 mins | |
| 1 | IMSA Endurance Series - 2026 Season 3 | Watkins Glen International - Boot | Races every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT | Rolling 160 mins | |
| 1 | IMSA Sportscar Endurance Challenge - 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 2 | IMSA iRacing Series - 2026 Season 3 | Mobility Resort Motegi - Grand Prix | Races every 2 hours at :45 past | Rolling 45 mins | |
| 2 | IMSA iRacing Series - Fixed - 2026 Season 3 | Mobility Resort Motegi - Grand Prix | Races every 2 hours at :45 past | Rolling 35 mins | |
| 2 | LMP2 Challenge - 2026 Season 3 - Fixed | Mobility Resort Motegi - Grand Prix | Races every 2 hours at :00 | Rolling 20 mins | |
| 2 | LMP3 Trophy - 2026 Season 3 | Watkins Glen International - Boot | Races every 2 hours at :30 past | Rolling 20 mins | |
| 2 | Proto-GT Challenge 2026 Season 3 | Oulton Park Circuit - International | Races every 2 hours at :45 past | Rolling 30 mins | |
| 2 | Radical Esports Cup - 2026 Season 3 | Nürburgring Grand-Prix-Strecke - BES/WEC | Races every 2 hours on the hour | Standing 14 laps | |
| 2 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Watkins Glen International - Boot | Races every 2 hours at :30 past | Rolling 30 mins | |
| 1 | Global Endurance Tour - 2026 Season 3 | Mobility Resort Motegi - Grand Prix | Races every other Saturday at 7, 18 GMT and Sunday at 14 GMT | Rolling 1440 mins | |
| 3 | IMSA iRacing Series - 2026 Season 3 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every 2 hours at :45 past | Rolling 45 mins | |
| 3 | IMSA iRacing Series - Fixed - 2026 Season 3 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every 2 hours at :45 past | Rolling 35 mins | |
| 3 | LMP2 Challenge - 2026 Season 3 - Fixed | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every 2 hours at :00 | Rolling 20 mins | |
| 3 | LMP3 Trophy - 2026 Season 3 | Autodromo Internazionale del Mugello - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 3 | Proto-GT Challenge 2026 Season 3 | Circuit de Spa-Francorchamps - Endurance | Races every 2 hours at :45 past | Rolling 30 mins | |
| 3 | Radical Esports Cup - 2026 Season 3 | Barber Motorsports Park | Races every 2 hours on the hour | Standing 19 laps | |
| 3 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Autodromo Internazionale del Mugello - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 2 | IMSA Endurance Series - 2026 Season 3 | Canadian Tire Motorsports Park | Races every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT | Rolling 160 mins | |
| 2 | IMSA Sportscar Endurance Challenge - 2026 Season 3 | Autodromo Internazionale del Mugello - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 4 | IMSA iRacing Series - 2026 Season 3 | Canadian Tire Motorsports Park | Races every 2 hours at :45 past | Rolling 45 mins | |
| 4 | IMSA iRacing Series - Fixed - 2026 Season 3 | Canadian Tire Motorsports Park | Races every 2 hours at :45 past | Rolling 35 mins | |
| 4 | LMP2 Challenge - 2026 Season 3 - Fixed | Canadian Tire Motorsports Park | Races every 2 hours at :00 | Rolling 20 mins | |
| 4 | LMP3 Trophy - 2026 Season 3 | Canadian Tire Motorsports Park | Races every 2 hours at :30 past | Rolling 20 mins | |
| 4 | Proto-GT Challenge 2026 Season 3 | Daytona International Speedway - Road Course | Races every 2 hours at :45 past | Rolling 30 mins | |
| 4 | Radical Esports Cup - 2026 Season 3 | Autodromo Internazionale Enzo e Dino Ferrari - Grand Prix | Races every 2 hours on the hour | Standing 16 laps | |
| 4 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Canadian Tire Motorsports Park | Races every 2 hours at :30 past | Rolling 30 mins | |
| 2 | Global Endurance Tour - 2026 Season 3 | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every other Saturday at 7, 18 GMT and Sunday at 14 GMT | Rolling 1440 mins | |
| 5 | IMSA iRacing Series - 2026 Season 3 | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours at :45 past | Rolling 45 mins | |
| 5 | IMSA iRacing Series - Fixed - 2026 Season 3 | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours at :45 past | Rolling 35 mins | |
| 5 | LMP2 Challenge - 2026 Season 3 - Fixed | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours at :00 | Rolling 20 mins | |
| 5 | LMP3 Trophy - 2026 Season 3 | Shell V-Power Motorsport Park at The Bend - International Circuit | Races every 2 hours at :30 past | Rolling 20 mins | |
| 5 | Proto-GT Challenge 2026 Season 3 | Road America - Full Course | Races every 2 hours at :45 past | Rolling 50 mins | |
| 5 | Radical Esports Cup - 2026 Season 3 | Road Atlanta - Full Course | Races every 2 hours on the hour | Standing 20 laps | |
| 5 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Shell V-Power Motorsport Park at The Bend - International Circuit | Races every 2 hours at :30 past | Rolling 30 mins | |
| 3 | IMSA Endurance Series - 2026 Season 3 | Road America - Full Course | Races every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT | Rolling 160 mins | |
| 3 | IMSA Sportscar Endurance Challenge - 2026 Season 3 | Shell V-Power Motorsport Park at The Bend - International Circuit | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 6 | IMSA iRacing Series - 2026 Season 3 | Road America - Full Course | Races every 2 hours at :45 past | Rolling 45 mins | |
| 6 | IMSA iRacing Series - Fixed - 2026 Season 3 | Road America - Full Course | Races every 2 hours at :45 past | Rolling 35 mins | |
| 6 | LMP2 Challenge - 2026 Season 3 - Fixed | Road America - Full Course | Races every 2 hours at :00 | Rolling 20 mins | |
| 6 | LMP3 Trophy - 2026 Season 3 | Road America - Full Course | Races every 2 hours at :30 past | Rolling 20 mins | |
| 6 | Proto-GT Challenge 2026 Season 3 | Brands Hatch Circuit - Grand Prix | Races every 2 hours at :45 past | Rolling 30 mins | |
| 6 | Radical Esports Cup - 2026 Season 3 | Silverstone Circuit - Grand Prix | Races every 2 hours on the hour | Standing 13 laps | |
| 6 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Road America - Full Course | Races every 2 hours at :30 past | Rolling 30 mins | |
| 3 | Global Endurance Tour - 2026 Season 3 | Autódromo José Carlos Pace - Grand Prix | Races every other Saturday at 7, 18 GMT and Sunday at 14 GMT | Rolling 1440 mins | |
| 7 | IMSA iRacing Series - 2026 Season 3 | Autodromo Nazionale Monza - Grand Prix | Races every 2 hours at :45 past | Rolling 45 mins | |
| 7 | IMSA iRacing Series - Fixed - 2026 Season 3 | Autodromo Nazionale Monza - Grand Prix | Races every 2 hours at :45 past | Rolling 35 mins | |
| 7 | LMP2 Challenge - 2026 Season 3 - Fixed | Autodromo Nazionale Monza - Grand Prix | Races every 2 hours at :00 | Rolling 20 mins | |
| 7 | LMP3 Trophy - 2026 Season 3 | Suzuka International Racing Course - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 7 | Proto-GT Challenge 2026 Season 3 | Nürburgring Combined - Gesamtstrecke VLN | Races every 2 hours at :45 past | Rolling 4 laps | |
| 7 | Radical Esports Cup - 2026 Season 3 | Willow Springs International Raceway - Big Willow | Races every 2 hours on the hour | Standing 22 laps | |
| 7 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Suzuka International Racing Course - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 4 | IMSA Endurance Series - 2026 Season 3 | Autodromo Nazionale Monza - Grand Prix | Races every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT | Rolling 160 mins | |
| 4 | IMSA Sportscar Endurance Challenge - 2026 Season 3 | Suzuka International Racing Course - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 8 | IMSA iRacing Series - 2026 Season 3 | Fuji International Speedway - No Chicane | Races every 2 hours at :45 past | Rolling 45 mins | |
| 8 | IMSA iRacing Series - Fixed - 2026 Season 3 | Fuji International Speedway - No Chicane | Races every 2 hours at :45 past | Rolling 35 mins | |
| 8 | LMP2 Challenge - 2026 Season 3 - Fixed | Fuji International Speedway - No Chicane | Races every 2 hours at :00 | Rolling 20 mins | |
| 8 | LMP3 Trophy - 2026 Season 3 | St. Petersburg Grand Prix - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 8 | Proto-GT Challenge 2026 Season 3 | Virginia International Raceway - Full Course | Races every 2 hours at :45 past | Rolling 30 mins | |
| 8 | Radical Esports Cup - 2026 Season 3 | Lime Rock Park - Classic | Races every 2 hours on the hour | Standing 33 laps | |
| 8 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | St. Petersburg Grand Prix - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 4 | Global Endurance Tour - 2026 Season 3 | Fuji International Speedway - No Chicane | Races every other Saturday at 7, 18 GMT and Sunday at 14 GMT | Rolling 1440 mins | |
| 9 | IMSA iRacing Series - 2026 Season 3 | Daytona International Speedway - Road Course | Races every 2 hours at :45 past | Rolling 45 mins | |
| 9 | IMSA iRacing Series - Fixed - 2026 Season 3 | Daytona International Speedway - Road Course | Races every 2 hours at :45 past | Rolling 35 mins | |
| 9 | LMP2 Challenge - 2026 Season 3 - Fixed | Daytona International Speedway - Road Course | Races every 2 hours at :00 | Rolling 20 mins | |
| 9 | LMP3 Trophy - 2026 Season 3 | Phillip Island Circuit | Races every 2 hours at :30 past | Rolling 20 mins | |
| 9 | Proto-GT Challenge 2026 Season 3 | Algarve International Circuit - Grand Prix | Races every 2 hours at :45 past | Rolling 50 mins | |
| 9 | Radical Esports Cup - 2026 Season 3 | Circuit Zolder - Alternate | Races every 2 hours on the hour | Standing 19 laps | |
| 9 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Phillip Island Circuit | Races every 2 hours at :30 past | Rolling 30 mins | |
| 5 | IMSA Endurance Series - 2026 Season 3 | Virginia International Raceway - Full Course | Races every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT | Rolling 160 mins | |
| 5 | IMSA Sportscar Endurance Challenge - 2026 Season 3 | Phillip Island Circuit | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 10 | IMSA iRacing Series - 2026 Season 3 | Virginia International Raceway - Full Course | Races every 2 hours at :45 past | Rolling 45 mins | |
| 10 | IMSA iRacing Series - Fixed - 2026 Season 3 | Virginia International Raceway - Full Course | Races every 2 hours at :45 past | Rolling 35 mins | |
| 10 | LMP2 Challenge - 2026 Season 3 - Fixed | Virginia International Raceway - Full Course | Races every 2 hours at :00 | Rolling 20 mins | |
| 10 | LMP3 Trophy - 2026 Season 3 | Virginia International Raceway - Full Course | Races every 2 hours at :30 past | Rolling 20 mins | |
| 10 | Proto-GT Challenge 2026 Season 3 | Road Atlanta - Full Course | Races every 2 hours at :45 past | Rolling 30 mins | |
| 10 | Radical Esports Cup - 2026 Season 3 | Phillip Island Circuit | Races every 2 hours on the hour | Standing 18 laps | |
| 10 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Virginia International Raceway - Full Course | Races every 2 hours at :30 past | Rolling 30 mins | |
| 5 | Global Endurance Tour - 2026 Season 3 | Daytona International Speedway - Road Course | Races every other Saturday at 7, 18 GMT and Sunday at 14 GMT | Rolling 1440 mins | |
| 11 | IMSA iRacing Series - 2026 Season 3 | Road Atlanta - Full Course | Races every 2 hours at :45 past | Rolling 45 mins | |
| 11 | IMSA iRacing Series - Fixed - 2026 Season 3 | Road Atlanta - Full Course | Races every 2 hours at :45 past | Rolling 35 mins | |
| 11 | LMP2 Challenge - 2026 Season 3 - Fixed | Road Atlanta - Full Course | Races every 2 hours at :00 | Rolling 20 mins | |
| 11 | LMP3 Trophy - 2026 Season 3 | Autodromo Internazionale Enzo e Dino Ferrari - Grand Prix | Races every 2 hours at :30 past | Rolling 20 mins | |
| 11 | Proto-GT Challenge 2026 Season 3 | Sebring International Raceway - International | Races every 2 hours at :45 past | Rolling 30 mins | |
| 11 | Radical Esports Cup - 2026 Season 3 | Canadian Tire Motorsports Park | Races every 2 hours on the hour | Standing 21 laps | |
| 11 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Autodromo Internazionale Enzo e Dino Ferrari - Grand Prix | Races every 2 hours at :30 past | Rolling 30 mins | |
| 6 | IMSA Endurance Series - 2026 Season 3 | Road Atlanta - Full Course | Races every other Saturday at 2, 7, 18 GMT and Sunday at 14 GMT | Rolling 160 mins | |
| 6 | IMSA Sportscar Endurance Challenge - 2026 Season 3 | Autodromo Internazionale Enzo e Dino Ferrari - Grand Prix | Races every other Saturday at 4 & 15 GMT and Sunday at 0 GMT, 20 GMT | Rolling 120 mins | |
| 12 | IMSA iRacing Series - 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :45 past | Rolling 45 mins | |
| 12 | IMSA iRacing Series - Fixed - 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :45 past | Rolling 35 mins | |
| 12 | LMP2 Challenge - 2026 Season 3 - Fixed | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :00 | Rolling 20 mins | |
| 12 | LMP3 Trophy - 2026 Season 3 | Okayama International Circuit - Full Course | Races every 2 hours at :30 past | Rolling 20 mins | |
| 12 | Proto-GT Challenge 2026 Season 3 | Suzuka International Racing Course - Grand Prix | Races every 2 hours at :45 past | Rolling 30 mins | |
| 12 | Radical Esports Cup - 2026 Season 3 | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours on the hour | Standing 17 laps | |
| 12 | Sports Car Challenge by Falken Tyre - 2026 Season 3 | Okayama International Circuit - Full Course | Races every 2 hours at :30 past | Rolling 30 mins | |
| 6 | Global Endurance Tour - 2026 Season 3 | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every other Saturday at 7, 18 GMT and Sunday at 14 GMT | Rolling 1440 mins |