Did Not Finish

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In racing, Did Not Finish (DNF) denotes a participant who does not finish a given race, either because of a mechanical failure, negative thoughts or mental distress, [1] injury, or involvement in an accident. [2] The term is used in:

Contents

  • Automotive racing such as NASCAR; IndyCar; off-road racing, including buggy, trucks, kart, and UTVs, both desert [3] [4] [5] and short-track; [6]
  • Motocross and quad racing, both desert and short-track;
  • Horse racing; [7]
  • Competitive cycling; [8]
  • Competitive track and distance running; and
  • Competitive snow skiing and snowboarding;

    • among other types of racing. Race participants try to avoid receiving a DNF, as some associate it with a negative stigma. [9]

    Scholarly research

    Decathlon Competitors
    DNFs have been the subject of numerous studies that seek to figure out why DNF rates vary greatly, even within the same competitive discipline. For example, in track and field, 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%. [10]

    DNFs are also not always evenly distributed across all participants. For example, a 2009 New York Times analysis of New York City Marathon 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." [11] Glace et al. (2002) performed ANOVA analysis of finishers as compared to DNFs in an ultramarathon and concluded that they had statistically different nutrition and liquid intake. [12] Holbrook et al. found physiological differences between finishers and DNFs among horses engaging in long-distance races. [13]
    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 be still won. [14]

    Related Research Articles

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    Motorsport Sport primarily involving the use of motorized vehicles

    Motorsport, motorsports or motor sport is a global term used to encompass the group of competitive sporting events which primarily involve the use of motorised vehicles, whether for racing or non-racing competition. The terminology can also be used to describe forms of competition of two-wheeled motorised vehicles under the banner of motorcycle racing, and includes off-road racing such as motocross.

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    Handicapping

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    Photo finish

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    Thompson Speedway Motorsports Park NASCAR race track

    Thompson Speedway Motorsports Park (TSMP), formerly Thompson Speedway and Thompson International Speedway, is a motorsports park in Thompson, Connecticut, featuring a 5⁄8-mile (1.0 km) asphalt oval racetrack and a 1.7-mile (2.7 km) road racing course. Once known as the "Indianapolis of the East", it was the first asphalt-paved racing oval track in the United States and is now under the NASCAR Whelen All-American Series banner. Each year Thompson hosts one of the great fall variety events "The World Series of Auto Racing" highlighted by the International Supermodified Association and the NASCAR Whelen Modified Tour. This event frequently draws over 350 race cars in 16 separate divisions over three days. Thompson Speedway Motorsports Park is the track that had hosted the most ever races in the modern era of the NASCAR Whelen Modified Tour with 146 races from 1985 to 2019.

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    NASCAR engine Motor vehicle engine

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    References

    1. ↑ "You Should Almost Always Finish Your Race". 19 April 2021.
    2. ↑ McCormick, Steve. "DNF". NASCAR racing. About.com. Archived from the original on 5 September 2017. Retrieved 6 January 2013.
    3. ↑ https://score-international.com
    4. ↑ https://bitd.com
    5. ↑ https://racesadr.com
    6. ↑ http://www.lucasoiloffroad.com
    7. ↑ Thuneberg-Selonen, Terhi; Pösö, Jukka; Mäntysaari, Esa; Ojala, Matti (1999). "Use of individual race results inquad the estimation of genetic parameters of trotting performance for Finnhorse and Standardbred trotters" (PDF). Agricultural and Food Science in Finland. 8 (4–5): 353–363. doi:10.23986/afsci.5635. ISSN   1795-1895 . Retrieved 10 July 2016.
    8. ↑ Moore, Oliver (21 June 2006). "Canadian cyclist nears finish line of gruelling race; Aided by painkillers for injured knee, Wallace pedals on to Atlantic City". The Globe and Mail. p. A14.
    9. ↑ Rayner, Gordon (31 Aug 2012). "Cyclist Jody Cundy apologises for disqualification rant" . The Telegraph. Archived from the original on 2022-01-12. Retrieved 8 January 2013.
    10. ↑ Edouard, P. (April 2011). "Frequency of dropouts in decathlon: An epidemiological retrospective study". Science & Sports. 26 (2): 97–100. doi:10.1016/j.scispo.2010.11.002.
    11. ↑ Lehren, Andrew W. (June 3, 2009). "Finish Line in Sight, Final Challenge Is Making It There". New York Times. p. B14.
    12. ↑ Glace, Beth W.; Murphy, Christine A.; McHugh, Malachy P. (December 2002). "Food Intake and Electrolyte Status of Ultramarathoners Competing in Extreme Heat". J Am Coll Nutr. 21 (6): 553–559. doi:10.1080/07315724.2002.10719254. PMID   12480801. S2CID   32316168.
    13. ↑ Holbrook, T. C.; Birks, E. K.; Sleeper, M. M.; Durando, M. (August 2006). "Endurance exercise is associated with increased plasma cardiac troponin I in horses". Equine Veterinary Journal. 38 (S36): 27–31. doi:10.1111/j.2042-3306.2006.tb05508.x. PMID   17402387.
    14. ↑ "Points Schedule".
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