In racing, did not finish (DNF) denotes a result of a participant who does not finish a given race, either because of a mechanical failure, injury, or involvement in an accident. The term is used in: * Automotive racing such as

Formula One Formula One (also known as Formula 1 or F1) is the highest class of international racing for open-wheel single-seater formula racing cars sanctioned by the Fédération Internationale de l'Automobile (FIA). The World Drivers' Championship, ...

;

NASCAR The National Association for Stock Car Auto Racing, LLC (NASCAR) is an American auto racing sanctioning and operating company that is best known for stock car racing. The privately owned company was founded by Bill France Sr. in 1948, and ...

;

IndyCar INDYCAR, LLC, is an American-based auto racing sanctioning body for Indy car racing and other disciplines of open wheel car racing. The organization sanctions five racing series: the premier IndyCar Series with its centerpiece the Indianapoli ...

; off-road racing, including buggy, trucks, kart, and UTVs, both desert and short-track *

Motocross 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. History Motocross first evolved in Britain from motorcycle trials competiti ...

and quad racing, both desert and short-track *

Horse racing Horse racing is an equestrian performance sport, typically involving two or more horses ridden by jockeys (or sometimes driven without riders) over a set distance for competition. It is one of the most ancient of all sports, as its basic pr ...

*Competitive

cycling Cycling, also, when on a two-wheeled bicycle, called bicycling or biking, is the use of cycles for transport, recreation, exercise or sport. People engaged in cycling are referred to as "cyclists", "bicyclists", or "bikers". Apart from ...

*Competitive

track Track or Tracks may refer to: Routes or imprints * Ancient trackway, any track or trail whose origin is lost in antiquity * Animal track, imprints left on surfaces that an animal walks across * Desire path, a line worn by people taking the shorte ...

and distance running *Competitive snow

skiing Skiing is the use of skis to glide on snow. Variations of purpose include basic transport, a recreational activity, or a competitive winter sport. Many types of competitive skiing events are recognized by the International Olympic Committee ( ...

and

snowboarding Snowboarding is a recreational and competitive activity that involves descending a snow-covered surface while standing on a snowboard that is almost always attached to a rider's feet. It features in the Winter Olympic Games and Winter Paralympic ...

* Speedcubing Race participants try to avoid receiving a DNF, as some associate it with poor driving.

Scholarly research

Decathlon competitors

Numerous studies have sought to figure out why DNF rates vary greatly, even within the same competitive discipline. For example, in

track and field Track and field is a sport that includes athletic contests based on running, jumping, and throwing skills. The name is derived from where the sport takes place, a running track and a grass field for the throwing and some of the jumping eve ...

, Edouard found a 22% overall DNF rate among high level decathlon competitors but DNF rates in individual events ranging from less than 1% to over 6%. DNFs are also not always evenly distributed across all participants. For example, a 2009 ''

New York Times ''The New York Times'' (''the Times'', ''NYT'', or the Gray Lady) is a daily newspaper based in New York City with a worldwide readership reported in 2020 to comprise a declining 840,000 paid print subscribers, and a growing 6 million paid ...

'' analysis of

New York City Marathon The New York City Marathon (currently branded TCS New York City Marathon after its headline sponsor (commercial), sponsor) is an annual Marathon (sport), marathon () that courses through the five boroughs of New York City. It is the largest mar ...

results concluded that recreational competitors were more likely to finish the race rather than be classified as DNF: "Elite runners seem more inclined to drop out rather than simply complete the race, and runners visiting from abroad seem more inclined to push themselves to the finish line no matter their time." Glace et al. (2002) performed ANOVA analysis of finishers as compared to DNFs in an

ultramarathon An ultramarathon, also called ultra distance or ultra running, is any footrace longer than the traditional marathon length of . Various distances are raced competitively, from the shortest common ultramarathon of to over . 50k and 100k are bot ...

and concluded that they had statistically different nutrition and liquid intake. Holbrook et al. found physiological differences between finishers and DNFs among horses engaging in long-distance races.

Types of DNF

Auto Racing

In Auto Racing a DNF usually occurs due to a mechanical failure, an accident, or driver fatigue, prevents a driver from finishing a race.

Skiing

In skiing, especially in the speed disciplines of downhill and

super-G Super giant slalom, or super-G, is a racing discipline of alpine skiing. Along with the faster downhill, it is regarded as a "speed" event, in contrast to the technical events giant slalom and slalom. It debuted as an official World Cup event d ...

, a DNF can denote an athlete who has lost control and crashes off their skis. Athletes can also DNF without crashing if they stray too far outside the racing line. This might occur through skiing out, where an athlete misses a gate at any point during a ski race. The consequences of doing so are instant elimination from the event even if it spans multiple runs, as

slalom To slalom is to zigzag between obstacles. It may refer to: Sports ;Alpine skiing and/or snowboarding * Slalom skiing, an alpine skiing and alpine snowboarding discipline * Giant slalom, an alpine skiing and alpine snowboarding discipline * Super-G ...

giant slalom Giant slalom (GS) is an alpine skiing and alpine snowboarding discipline. It involves skiing between sets of poles ("gates") spaced at a greater distance from each other than in slalom but less than in Super-G. Giant slalom and slalom make up th ...

and the combined events do at the

Winter Olympics The Winter Olympic Games (french: link=no, Jeux olympiques d'hiver) is a major international multi-sport event held once every four years for sports practiced on snow and ice. The first Winter Olympic Games, the 1924 Winter Olympics, were h ...

Off-road racing

In off-road racing a DNF might cost a racing team a points championship in its racing class. It is not uncommon though that the more races in a season, the better chance another team will DNF, therefore a championship and purse could still be won.

Related terms

* Did not start (DNS) * Did not qualify (DNQ) * Disqualified (DSQ)

References

{{Reflist Racing Horse racing Sport of athletics terminology Motorsport terminology Road bicycle racing terminology Boat racing