2003 Lucas Oil AMA Pro Motocross Championship
Motocross Race Results
- Monster Energy AMA Supercross Championship
- AMA Pro Motocross Championship
- SuperMotocross World Championship
- FIM Motocross World Championship
- GNCC Racing
- Motocross of Nations
- FIM World Supercross Championship
- Australian Supercross Championship
- Women's Motocross Championship
- Monster Energy Cup
- MotocrossSteel City Raceway August 31, 2003
- MotocrossBroome-Tioga Sports Center August 24, 2003
- MotocrossSpring Creek Motocross (Millville) August 17, 2003
- MotocrossWashougal Motocross July 27, 2003
- MotocrossUnadilla Motocross July 20, 2003
- MotocrossRedBud Track 'n Trail July 6, 2003
- Motocross
- MotocrossMoto-X 338 June 8, 2003
- MotocrossHigh Point Raceway May 25, 2003
- Motocross
- MotocrossGlen Helen Raceway May 11, 2003