The Maxxis British Motocross Championship is the main UK off-road competition and organised into classes of MX1 and MX2.MX1 is for 250 cc to 450 cc (fourstroke) and MX2 for 175 cc to 250 cc fourstroke motorcycles.
Supermoto races may take place at modified go-kart tracks, road racing tracks, or even street racing tracks.
There are also classes for kids such as the 85 cc class.
When organisers dispensed with delicate balancing and strict scoring of trials in favour of a race to become the fastest rider to the finish, the activity became known as "scrambles", said to have originated in the phrase, "a rare old scramble" describing one such early race.
Though known as scrambles racing in the United Kingdom, the sport grew in popularity and the competitions became known internationally as "motocross racing", by combining the French word for motorcycle, motocyclette, or moto for short, into a portmanteau with "cross country".
Some tracks for these race events have jumps, berms, and whoops like motocross tracks.
For special events, the Supermoto track may incorporate metal ramps for jumps that can be disassembled and taken to other locations.They dominated the event, placing their lightweight two-strokes into the top six finishing positions.By the late 1960s Japanese motorcycle companies began challenging the European factories for supremacy in the motocross world.The sport evolved with sub-disciplines such as stadium events known as supercross and arenacross held in indoor arenas. Freestyle motocross (FMX) events where riders are judged on their jumping and aerial acrobatic skills have gained popularity, as well as supermoto, where motocross machines race both on tarmac and off-road.Vintage motocross (VMX) events take place - usually It is the major Motocross series worldwide.Freestyle Motocross (FMX), a relatively new variation of supercross, started out by the South African champion, Marco Urzi, does not involve racing and instead it concentrates on performing acrobatic stunts while jumping motocross bikes. The riders are scored on style, level of trick difficulty, best use of the course, and, frequently, crowd reactions.