VMC Enduro Events

Enduro motorcycles closely resemble motocross, or "MX" bikes (upon which they are often based). 

They may have special features such as oversized gas tanks, engines tuned for reliability and longevity, sskid plates and other protectors, and more durable (and heavier) components. 

Enduro bikes combine the long-travel suspension of an off-road motocross bike with engines that are more tractible, reliable and durable over long distances. 

Some enduro bikes have street-legal features such as headlights and quiet mufflers to enable them to use public roadways. 

The engine of an enduro bike is usually a single cylinder 2-stroke between 125 cc and 360 cc, or 4-stroke between 195 and 650 cc.

A large and powerful engine is not always an advantage, and riders may prefer smaller bikes that are lighter and more maneuverable. 

Enduros are often held in wet, boggy areas and as such 250 cc may be sufficient. 

In drier climates, where the dirt surface is firmer (albeit dusty), good riders can benefit from having a heavier bike with more power.

There may exist several design differences between enduro motorcycles and moto/supercross bikes, according to the rules of the particular competition. 

For an enduro event such as endurocross (Enduro-X), these may include:


Motorcycles specifically intended for enduro competition first appeared at the International Six Day Trial (ISDT) now called the International Six Days Enduro (ISDE). 

The ISDE was first held in 1913 at Carlisle, England. 

The ISDE requires an enduro motorcycle to withstand over six days and upwards of 1250 km (777 miles) of competition; repairs are limited to those performed by the rider with limited parts.

The ISDE has occurred annually, apart from interruptions due to World War I and World War II, at various locations throughout the world.

The early events were a test of rider skill and motorcycle reliability.

The earliest ISDE courses used the dirt roads common in that era. Today, most of the routes are off-road.[3] In 1980, the ISDT was renamed the International Six Day Enduro (ISDE). Until 1973, the ISDE was always held in Europe.

In 1973, it was brought to the United States, and since then it has been held outside Europe more frequently: twice in Australia (1992 and 1998), again in the USA (1994), Brazil (2003), New Zealand (2006) and Chile (2007).

The ISDE has attracted national teams from as many as 32 countries in recent years.

In the 1970s, the term was used in US marketing and applied to dual-purpose motorcycles regardless of their suitability for competition.

Many current enduro motorcycles are built along the basic lines of a World Championship (WEC) machine, as used in the World Enduro Championship. 

The WEC is a time-card enduro, whereby a number of stages are raced in a time trial against the clock over a course of at least 200 km (124 miles) consisting of both paved and unpaved trails and roads (up to 30% of the course may be on public or private asphalted roads).

Another popular type of enduro competition that has spurred enduro motorcycle development is endurocross, a hybrid event combining enduro and supercross.


For complete CMA Trials Rules go to this Sites Rules and Regulations Tab, then the Enduro Competition Rules