Thought I should get this one rolling...
1. 6 Hours of Silverstone - 17th April
2. 6 Hours of Spa Francorchamps - 7th May
3. 24 Hours of Le Mans - 18th & 19th of June
4. 6 Hours of Nurburgring - 24th of July
5. 6 Hours of Mexico City - 3rd September
6. 6 Hours of the Circuit of the Americas - 17th September
7. 6 Hours of Fuji - 16th of October
8. 6 Hours of Shanghai - 6th of November
9. 6 Hours of Bahrain - 19th of November