Enduro is a form of motorcycle sport run on courses that are predominantly off-road. Enduro consists of many different obstacles and challenges. The main type of enduro event, and the format to which the World Enduro Championship is run, is a time-card enduro, whereby a number of stages are raced in a time trial against the clock.

In a traditional time-keeping enduro, riders leave together in groups or rows, and each row starts at a certain minute. The object of the event is to arrive at pre-defined locations according to a strict schedule. Early or late arrivals result in the riders' scores being penalized. Throughout a day there will also be allocated periods for refuelling and servicing the machine. Penalties apply for not meeting defined times or for outside-assistance when not permitted.

A world championship course must be at least 200 km and a maximum of 30% of its length can be on asphalt roads. American Motorcycle Association (AMA) rules are different with respect to course length and other variables (i.e. average speed, terrain type, etc.). The rules of the regional sanctioning body can also affect the rules for a particular enduro course.

Christopher "Chris" Birchall CM (born 5 May 1984) is an English-born Trinidad and Tobago international footballer who plays as a midfielder for the Columbus Crew of Major League Soccer.

Forging his career with local club Port Vale, he earned worldwide recognition by playing at the 2006 FIFA World Cup for Trinidad and Tobago – the country of his mother's birth. His exploits led to a move up the leagues to Coventry City later that year. After short loan spells with Scottish side St. Mirren and Carlisle United, he moved on to Brighton & Hove Albion. In 2009 he moved to the United States to sign with MLS club Los Angeles Galaxy. Whilst with the Galaxy, the club were crowned Major League Soccer Conference champions in 2009 and 2011, and also completed a Supporters' Shield and MLS Cup treble in 2011. He joined Columbus Crew in May 2012.

Birchall attended Alleyne's High School in Stone, Staffordshire, and started his career with Port Vale, having been associated with the Burslem based club since the age of nine. He made his debut under Brian Horton on 12 September 2001, replacing Neil Brisco 79 minutes into a 2–0 Second Round exit of the League Cup at Charlton Athletic's The Valley stadium. On 20 April 2002 he made his league debut, again replacing Brisco, this time in a 1–0 defeat by Brighton at Vale Park.