iRacing GTP Calendar
6 matching series across 60 scheduled series-weeks, including 2 fixed-setup series. Browse every published week, track and race cadence.
2026 Season 3 · 6 seriess · 24 track configurations · 18 cars · 2 fixed-setup series
Categories: SPORTS CAR. Published week starts run from to . The most-scheduled configuration is Autódromo José Carlos Pace - Grand Prix, used for 4 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 Vintage Series - 2026 Season 3
- Prototype Challenge - 2026 Season 3 - Fixed
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 | IMSA Vintage Series - 2026 Season 3 | Phillip Island Circuit | Races every 2 hours on the hour | Rolling 40 mins | |
| 1 | Prototype Challenge - 2026 Season 3 - Fixed | Watkins Glen International - Boot | Races every 2 hours at :00 | Rolling 20 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 | |
| 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 | IMSA Vintage Series - 2026 Season 3 | [Legacy] Silverstone Circuit - 2008 - Historical Grand Prix | Races every 2 hours on the hour | Rolling 40 mins | |
| 2 | Prototype Challenge - 2026 Season 3 - Fixed | Mobility Resort Motegi - Grand Prix | Races every 2 hours at :00 | Rolling 20 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 | IMSA Vintage Series - 2026 Season 3 | St. Petersburg Grand Prix - Grand Prix | Races every 2 hours on the hour | Rolling 40 mins | |
| 3 | Prototype Challenge - 2026 Season 3 - Fixed | Circuit de Spa-Francorchamps - Grand Prix Pits | Races every 2 hours at :00 | Rolling 20 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 | |
| 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 | IMSA Vintage Series - 2026 Season 3 | Watkins Glen International - Classic Boot | Races every 2 hours on the hour | Rolling 60 mins | |
| 4 | Prototype Challenge - 2026 Season 3 - Fixed | Canadian Tire Motorsports Park | Races every 2 hours at :00 | Rolling 20 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 | IMSA Vintage Series - 2026 Season 3 | Motorsport Arena Oschersleben - Grand Prix | Races every 2 hours on the hour | Rolling 40 mins | |
| 5 | Prototype Challenge - 2026 Season 3 - Fixed | Autódromo José Carlos Pace - Grand Prix | Races every 2 hours at :00 | Rolling 20 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 | |
| 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 | IMSA Vintage Series - 2026 Season 3 | Detroit Grand Prix at Belle Isle - Belle Isle | Races every 2 hours on the hour | Rolling 40 mins | |
| 6 | Prototype Challenge - 2026 Season 3 - Fixed | Road America - Full Course | Races every 2 hours at :00 | Rolling 20 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 | IMSA Vintage Series - 2026 Season 3 | Tsukuba Circuit - 2000 Full | Races every 2 hours on the hour | Rolling 40 mins | |
| 7 | Prototype Challenge - 2026 Season 3 - Fixed | Autodromo Nazionale Monza - Grand Prix | Races every 2 hours at :00 | Rolling 20 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 | |
| 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 | IMSA Vintage Series - 2026 Season 3 | Nürburgring Grand-Prix-Strecke - BES/WEC | Races every 2 hours on the hour | Rolling 40 mins | |
| 8 | Prototype Challenge - 2026 Season 3 - Fixed | Fuji International Speedway - No Chicane | Races every 2 hours at :00 | Rolling 20 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 | IMSA Vintage Series - 2026 Season 3 | Mid-Ohio Sports Car Course - Full Course | Races every 2 hours on the hour | Rolling 40 mins | |
| 9 | Prototype Challenge - 2026 Season 3 - Fixed | Daytona International Speedway - Road Course | Races every 2 hours at :00 | Rolling 20 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 | |
| 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 | IMSA Vintage Series - 2026 Season 3 | Willow Springs International Raceway - Big Willow | Races every 2 hours on the hour | Rolling 60 mins | |
| 10 | Prototype Challenge - 2026 Season 3 - Fixed | Virginia International Raceway - Full Course | Races every 2 hours at :00 | Rolling 20 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 | IMSA Vintage Series - 2026 Season 3 | Oulton Park Circuit - Intl w/no Chicanes | Races every 2 hours on the hour | Rolling 40 mins | |
| 11 | Prototype Challenge - 2026 Season 3 - Fixed | Road Atlanta - Full Course | Races every 2 hours at :00 | Rolling 20 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 | |
| 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 | IMSA Vintage Series - 2026 Season 3 | Portland International Raceway - No Chicane | Races every 2 hours on the hour | Rolling 40 mins | |
| 12 | Prototype Challenge - 2026 Season 3 - Fixed | Circuit des 24 Heures du Mans - 24 Heures du Mans | Races every 2 hours at :00 | Rolling 20 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 |