FIM Motocross World Championship
The Grand Prix (or Motocross World Championship) is predominantly held in Europe with some “flyaway” rounds, recently in Chile, South Africa, Japan and the United States, but over its history it has visited numerous countries including; Indonesia, Australia and countries on both American continents. There are three classes: MX1, MX2 and MX3 (analogous to “450cc” and “250cc”, and “open”, respectively). Race day consists of two motos with a duration of 35 minutes plus two laps, while the series is longer, generally incorporating over 16 rounds.
The AMA Motocross Championship (the “outdoor series”) season begins in early May and continues until mid-September, and consists of twelve rounds at twelve major tracks all over the continental United States. There are two classes: the 250 Motocross Class for 0–125 cc 2-stroke or 150–250 cc 4-stroke machines; and the 450 Motocross Class for 150–250 cc 2-stroke or 251–450 cc 4-stroke machines.
The AMA Motocross champions in 2010 were 250 – Trey Canard (USA), Christophe Pourcel(FRA) and Dean Wilson (GBR) 450 – Ryan Dungey (USA), Brett Metcalfe (AUS) and Andrew Short (USA online catalogs for sellers of viagra and cialis in usa)
Motocross des Nations
The annual Motocross des Nations (now called Motocross of Nations) is usually held at the end of the year when National and World Championship series have ended. The format involves teams of three riders representing their nations. Each rider competes in a different class (MX1, MX2 and “Open”). There are three motos with two classes competing per moto. The location of the event changes from year to year. The United States, Belgium and Great Britain have had the greatest success.
British Motocross Championship
The Maxxis British Motocross Championship is the main UK off road competition and organised into classes of MX1 and MX2. MX1 for is for 251cc to 450cc (fourstroke) and MX2 for 175cc to 250cc fourstroke motorcycles. In 2007 an additional youth class, the MXY2 class, was added to the programme at selected rounds.
A ‘Veterans’ series was introduced in 2009 with just two rounds but the demand for places was so high that from 2011 the Veterans series will have three rounds, held over six races.