1981 / World Endurance Championship
Jan
31
XX Daytona 24 hours
Daytona International Speedway
Mar
21
XXIX Sebring 12 hours
Sebring International Raceway
Apr
12
VI Mugello 6 hours
Autodromo Internazionale del Mugello
Apr
26
III Riverside 6 hours
Riverside International Raceway
Apr
26
XVII Monza 1000 kms
Autodromo Nazionale di Monza
May
10
VI Silverstone 6 hours
Silverstone Circuit
May
24
XXVII ADAC Nürburgring 1000 kms
Nürburgring Nordschleife
Jun
13
IL Grand Prix des 24 heures du Mans
Circuit de la Sarthe
Jun
28
XXI Coppa Florio
Autodromo di Pergusa
Jul
11
XIV Watkins Glen 6 hours
Watkins Glen International
Jul
26
XXIX Spa-Francorchamps 24 hours
Circuit de Spa-Francorchamps
Aug
16
VI Mosport 6 hours
Mosport Park
Aug
23
III Elkhart Lake 500 miles
Road America
Sep
27
I Brands Hatch 1000 kms
Brands Hatch Grand Prix Circuit