May
| 1-May |
| Grobnik |
| IDM Yamaha R7 Cup |
| 2-May |
| Texas |
| NASCAR Truck Series |
| 3-May |
| Birmingham |
| USF Juniors |
| Denver |
| AMA Western Region 250 Supercross |
| AMA 450 Supercross |
| Germany |
| Speedway Grand Prix |
| Mexico City |
| TCR World Tour |
| NACAM F4 Championship |
| Nashville |
| ARCA Series East |
| Texas |
| NASCAR Xfinity Series |
| 4-May |
| Agueda |
| MXGP |
| MX2 |
| European EMX 250 |
| European EMX 125 |
| Birmingham |
| IndyCar Series |
| Indy NXT |
| Brands Hatch |
| GT World Challenge Europe Sprint |
| Cremona |
| Superbike World Championship |
| Supersport World Championship |
| World WCR |
| Estoril |
| JuniorGP |
| Moto2 European Championship |
| Stock European Championship |
| European Talent Cup |
| Fuji |
| Super GT Series (GT500 Class) |
| Super GT Series (GT300 Class) |
| F4 Japanese Championship |
| Interlagos |
| Stock Car Pro Series (Brasil) |
| Stock Car Light |
| F4 Brazilian Championship |
| Laguna Seca |
| Trans-Am Series TA1 |
| Trans-Am Series TA2 |
| Miami |
| Formula 1 World Championship |
| F1 Academy Series |
| Porsche Carerra Cup North America |
| Misano |
| TCR Italian Touring Car Championship |
| Italian GT Endurance |
| FR European Championship |
| Porsche Carerra Cup Italia |
| Italian F4 Championship |
| Monaco |
| Formula E World Championship |
| Navarra |
| F4 Spanish Championship |
| Portugal |
| World Rallycross Championship |
| Qld Raceway |
| ASBK Superbike |
| ASBK Supersport |
| ASBK Supersport 300 |
| ASBK Yamaha R3 Cup |
| ASBK Oceania Junior Cup |
| Road Atlanta |
| Moto America Superbike |
| Moto America Supersport |
| Moto America Stock 1000 |
| Moto America King of the Baggers |
| Moto America Super Hooligan |
| Sepang |
| TCR Asia Series |
| Silverstone |
| F4 British Championship |
| Sydney |
| GT World Challenge Australia |
| Porsche Sprint Challenge Australia |
| Texas |
| NASCAR Cup Series |
| 5-May |
| Oulton Park |
| BSB Superbike |
| BSB Supersport |
| BSB GP2 Cup |
| BSB British Superteen Championship |
Week 19
| 9-May |
| Kansas |
| ARCA Racing Series |
| Spa Francorchamps |
| Porsche Carerra Cup Germany |
| 10-May |
| Anderstorp |
| Porsche Carerra Cup Scandinavia |
| Nordic 4 |
| Gothenburg |
| TCR Scandinavia |
| Indianapolis (RC) |
| IndyCar Series |
| Indy NXT |
| USF Pro 2000 Championship |
| US F2000 National Championship |
| Kansas |
| NASCAR Truck Series |
| Le Mans |
| Moto E World Championship |
| Rally South Canterbury |
| New Zealand Rally Championship |
| Salt Lake City |
| AMA Eastern Region 250 Supercross |
| AMA Western Region 250 Supercross |
| AMA 450 Supercross |
| Spa Francorchamps (6 Hrs) |
| World Endurance Hypercars |
| World Endurance LMGT3 |
| 11-May |
| Brands Hatch (Indy) |
| British Touring Car Championship |
| Porsche Sprint Challenge Great Britain |
| Dijon |
| Porsche Carerra Cup France |
| French F4 Championship |
| Hampton Downs |
| NZ Super V8 Race Series |
| NZ V8 Ute Racing Series |
| Jyllandsringen |
| TCR Denmark Touring Car Series |
| Kansas |
| NASCAR Cup Series |
| Laguna Seca |
| IMSA Sportscar GTP |
| IMSA Sportscar GT Daytona Pro |
| IMSA Sportscar GT Daytona |
| IMSA Michelin Pilot Challenge GS |
| IMSA Michelin Pilot Challenge TCR |
| Le Mans |
| MotoGP World Championship |
| Moto2 World Championship |
| Moto3 World Championship |
| Red Bull MotoGP Rookies Cup |
| Lugo |
| MXGP |
| MX2 |
| European EMX 250 |
| Mandalika |
| GT World Challenge Asia |
| Ningbo |
| TCR China Touring Car Championship |
| Oschersleben |
| IDM Superbike |
| IDM Supersport 600 |
| IDM Sportbike |
| Northern Talent Cup |
| Rally Hungary |
| European Rally Championship |
| Symmons Plains |
| Supercars Championship |
| Super2 Series |
| SuperUtes Series |
| Touring Car Masters |
| Aussie Racing Cars |
| Targa Florio Rally |
| Italian Rally Championship |
| TBC** |
| ESBK Superbike |
| ESBK Supersport NG |
| ESBK SBK Jnr (SS300) |
| ESBK Pre Moto3 |
| Villicum |
| TCR South American Touring Car Series |
Week 20
| 17-May |
| North Wilkesboro |
| NASCAR Truck Series |
| Flat Rock |
| ARCA Series East |
| Poland |
| Speedway Grand Prix |
| Shannonville |
| CSBK Pro Superbike |
| CSBK Pro Sport Bike |
| CSBK Amateur Superbike |
| CSBK Amateur Sport Bike |
| CSBK Amateur Lightweight Sport Bike |
| 18-May |
| Aguascalientes |
| NASCAR Mexico Series |
| NASCAR Challenge Series (Mexico) |
| Autopolis |
| Super Formula |
| Super Formula Lights |
| Super Formula Lights Masters Class |
| Calatayud |
| Spanish Elite-MX1 Championship |
| Spanish Elite-MX2 Championship |
| Canada Heights |
| British MX1 Motocross Championship |
| British MX2 Motocross Championship |
| Chicago |
| NHRA Drag Racing Top Fuel Dragster |
| NHRA Drag Racing Top Fuel Funny Car |
| NHRA Drag Racing Pro Stock Motorcycle |
| Cingoli |
| Italian Prestige MX1 Elite Championship |
| Italian Prestige MX2 Elite Championship |
| COTA |
| Porsche Sprint Challenge North America |
| Donington Park |
| BSB Superbike |
| BSB Supersport |
| BSB GP2 Cup |
| BSB British Superteen Championship |
| BSB British Talent Cup |
| Imola |
| Formula 1 World Championship |
| Formula 2 Championship |
| Formula 3 Championship |
| Porsche Mobil 1 Supercup |
| Mosport |
| NASCAR Canada Series |
| Most |
| Superbike World Championship |
| Supersport World Championship |
| Supersport 300 World Championship |
| Phillip Island |
| Au3 Championship |
| Australian FFord Championship |
| Portugal |
| World Rally Championship |
| World Rally Championship-2 |
| Road America |
| FR Americas Championship |
| F4 United States Championship |
| Saitama |
| All Japan IA1 Motocross |
| All Japan IA2 Motocross |
| Sebring |
| GT World Challenge America |
| TC America |
| Shanghai |
| F4 Chinese Championship |
| Spa Francorchamps |
| TCR Europe Touring Car Series |
| Vallelunga |
| NASCAR Whelen EuroNASCAR Pro |
| NASCAR Whelen EuroNASCAR 2 |
Week 21
| 23-May |
| Charlotte |
| NASCAR Truck Series |
| ARCA Racing Series |
| Cremona (1) |
| CIV National Trophy 1000 |
| Indy Raceway Park |
| USF Pro 2000 Championship |
| US F2000 National Championship |
| 24-May |
| Charlotte |
| NASCAR Xfinity Series |
| Cremona (2) |
| CIV National Trophy 1000 |
| Colorado |
| ARCA Series West |
| Jim Clark Rally |
| British Rally Championship |
| Pala |
| AMA 450 Pro Motocross |
| AMA 250 Pro Motocross |
| 25-May |
| Cascavel |
| Stock Car Pro Series (Brasil) |
| Charlotte |
| NASCAR Cup Series |
| Ernee |
| MXGP |
| MX2 |
| European EMX 250 |
| European EMX 125 |
| Forest Rally |
| Australian Rally Championship |
| Indianapolis 500 (Oval) |
| IndyCar Series |
| Jim Clark Reivers Rally |
| Scottish Rally Championship |
| Lausitzring |
| Deutsche Tourenwagen Masters |
| ADAC GT Masters |
| Monaco |
| Formula 1 World Championship |
| Formula 2 Championship |
| Formula 3 Championship |
| Porsche Mobil 1 Supercup |
| Okayama |
| FR Japanese Championship |
| Schleizer Dreieck |
| IDM Yamaha R7 Cup |
| Silverstone |
| MotoGP World Championship |
| Moto2 World Championship |
| Moto3 World Championship |
| BSB British Talent Cup |
| Snetterton |
| British Touring Car Championship |
| Porsche Sprint Challenge Great Britain |
| F4 British Championship |
| Sugo |
| MFJ JSB 1000 |
| MFJ Superstock 1000 |
| MFJ Superstock 600 |
| MFJ J-GP3 |
| MFJ JP 250 |
| Tailem Bend |
| Au4 Championship |
| Traralgon |
| Australian ProMX Championship MX1 |
| Australian ProMX Championship MX2 |
| Australian ProMX Championship MX3 |
| Vallelunga |
| TCR Italian Touring Car Championship |
| Italian GT Sprint Championship |
| Italian Formula 4 Championship |
| 26-May |
| Lime Rock |
| Trans-Am Series TA1 |
| Trans-Am Series TA2 |
| Oulton Park |
| British GT Championship |
| GB4 Championship |
