Motocross is a form of off-road motorcycle racing held on enclosed off-road circuits. The sport evolved from motorcycle trials competitions held in the United Kingdom.
The AMA Supercross Championship is an American motorcycle racing series. Founded by the American Motorcyclist Association (AMA) in 1974, the AMA Supercross Championship races are held from January through early May. Supercross is a variant of motocross which involves off-road motorcycles on a constructed dirt track consisting of steep jumps and obstacles; the tracks are usually constructed inside a sports stadium. The easy accessibility and comfort of these stadium venues helped supercross surpass off-road motocross as a spectator attraction in the United States by the late 1970s.
The AMA Motocross Championship (commercially known as Pro Motocross Championship) is an American motorcycle racing series. The motocross race series was founded and sanctioned by the American Motorcyclist Association (AMA) in 1972. The series is the major outdoor motocross series in the United States and is sanctioned by AMA Pro Racing and managed by MX Sports Pro Racing.
Nicholas Jon Yelloly is a British professional racing driver, and BMW Motorsport works driver. He is also currently a test and simulator driver for the Aston Martin F1 team.
Pascal Wehrlein is a German and Mauritian racing driver currently competing in Formula E for Porsche. He previously raced in Formula One for the Sauber and Manor teams. Holding dual nationality of Germany and Mauritius, he raced under the German flag in Formula One. He had previously raced in DTM, winning the title with the Mercedes-Benz team HWA AG in 2015. In 2013, Wehrlein became the youngest driver to start a DTM race at the age of 18, in 2014, he became the youngest driver to take pole position and a race win at the age of 19, and the following year, he was the youngest to win the title, at the age of 20.
Ken Roczen is a German professional motocross and supercross racer. He competed in the Motocross World Championships from 2009 to 2011 and the AMA Supercross Championships since 2011. He is the 2011 MX2 World Champion, a two-time 450cc AMA Motocross Champion, the 2013 AMA Supercross 250cc West Champion & a two-time FIM World Supercross WSX Champion. He was also a member of the winning German team at the 2012 Motocross des Nations.
The 2015 FIM Motocross World Championship was the 59th F.I.M. Motocross World Championship season. It included 18 events, starting at Losail in Qatar on 28 February, and ending at San Bernardino, California in the United States on 20 September. In the main MXGP class, Tony Cairoli was the six-time defending champion, and entered the 2015 season looking to score a record seventh consecutive premier class title, for Red Bull KTM. He and Maximilian Nagl started the year strong, and as the German round rolled around Nagl had a 30 points lead over Cairoli and 38 over rookie Romain Febvre. Nagl got injured on practice and missed the next 5 rounds, ending his hopes of a maiden championship. Cairoli was struggling during the summer and ended up injured as well. Romain Febvre won the title and became the first french premier-class champion. In the MX2 class, Jordi Tixier was the defending champion, after taking the title in the final race of the 2014 season, also for Red Bull KTM. Tixier defends his title with Team Monster Energy Kawasaki.
The 2019 ADAC TCR Germany Touring Car Championship will be the fourth season of touring car racing to be run by the German-based sanctioning body ADAC to the TCR regulations. The series will run predominantly in ADAC's home nation Germany. As a support category to the ADAC GT Masters series, the championship will also take in races in the neighbouring nations of Austria, the Netherlands and the Czech Republic.
The 2019 ADAC Formula 4 Championship was the fifth season of the ADAC Formula 4, an open-wheel motor racing series. It was a multi-event motor racing championship that featured drivers competing in 1.4 litre Tatuus-Abarth single seat race cars that conformed to the technical regulations for the championship. It began on 27 April at Oschersleben and finished on 29 September at Sachsenring after seven triple header rounds.
The ProMX Motocross Championship, is the premier Australian Motocross series, sanctioned by Motorcycling Australia. The series runs throughout autumn and winter, before the Supercross stadium series in spring, and features three classes; the premier class MX1, MX2, and MX3, which also features junior riders. An MXW class for women is also part of the series.
Jettson Lawrence is an Australian Motocross racer. Competing in the AMA Supercross & Motocross Championships; a one-time 450cc AMA Supercross, 450cc AMA Motocross & 450cc SuperMotocross Champion, a two-time 250cc AMA Motocross, & 250cc AMA Supercross Champion.
The SuperMotocross World Championship is the premier combined discipline world championship of off-road motorcycle racing. Conceived in 2023 after the AMA Supercross Championship lost its FIM World Championship status, the series consists of the aforementioned Supercross series and the AMA Motocross Championship, followed by two playoff races and a final to determine the SuperMotocross world champion.
Harri Kullas is a Finnish-born Estonian professional motocross racer. Kullas has had a long international career that has seen him compete in the FIM Motocross World Championship in both the MX2 and MXGP classes.
Shane McElrath is an American professional Motocross and Supercross racer.
The Spanish Motocross Championship is the premier domestic Spanish Motocross series, sanctioned by the Real Federación Motociclista Española.
The New Zealand Motocross Championship is the premier domestic Motocross series in New Zealand, sanctioned by Motorcycling New Zealand.
Calvin Vlaanderen is a South African-born Dutch professional Motocross racer.
Mikkel Haarup is a Danish professional Motocross racer. Haarup has competed in the FIM Motocross World Championship since the 2019 season.
The Dutch Masters of Motocross (DMoMX) is the premier domestic Dutch Motocross series, sanctioned by the Koninklijke Nederlandse Motorrijders Vereniging.
The Italian Prestige Motocross Championship is the premier domestic Italian Motocross series, sanctioned by the Federazione Motociclistica Italiana.
Current season 
