thumb|570px|centroEl triathlon el xe un sport multidisciplinae articoà so tre prove, che le xe nuoto, siclismo e corsa, in imediata sucesione tramite na area de tranxision indove poderse pareciar pa 'a prova succesiva (e xe ciamae T1 par el cambio intra el nuoto e 'a bici e T2 daea bici ała corsa). Dal 2000 el xe diventà parte de i xughi olimpici.
In Itàlia el xe regoà da 'a Federazione Italiana Triathlon (FiTri).
Storia 'E prime manifestasion de 'sta disiplina le gà avùo logo in Fransa inte i ani '20 del '900 (anca se co regoamenti difarenti rispeto a queo odierno), mentre quea considerà come 'a capostipite de 'e gare ne 'i Stati Unii de ła Mèrica, ṡe gà svolto in Całifornia, inte el 1974.
Inte el 1978 ghe fu inveṡe 'a prima gara "moderna" del triathlon, lIronman Kona su l'arṡipeago delle Hawaii, so 'a distanṡa de 3,8 km a nuoto, 180 km de bici e 42,195 km de corsa; la xe stada vinta dal statunitense Gordon Haller, in poco meno de 12 ore.
Distanṡe 'E distanse stàndar le xe: DistansaNuotoSiclismoCorsa"Supersprint"400 m10 km2,5 km"Sprint"750 m20 km5 km"Olimpico"1500 m40 km10 km"Mexo Ironman" o "Medio"1900 m90 km21,097 km"Longo"4000 m120 km30 km"Ironman"3800 m180 km42,195 km
Organixasion Internation Triathlon Union (ITU), fondà inte el 1989 come ente internasionae deo sport, el xe a streto contato col Comitato Olinpico; el se ocupa dea World Triathlon Series par le distanse sprint, olimpiche e longhe. El colabora, ai difarenti comitati nasionai oltre a presiedere le federasioni continentai. World Triathlon Corporation (WTC), la xe 'na compagnia privada piasà pì che altro so 'li Ironman, i 70,3 (o mexo ironman). Ultra Triathlon Association (IUTA), el xe l'organo uficiae impegnà so l'ultra-triathlon, overo 'i avegnimenti superiori, come chilometraxo, ai ironman. El triathlon el xe inoltrà incorporà ai xughi olinpici dal 2000 a Sydney, su 'a distansa olinpinica.
I ghe xe, infin, altri sircuiti minori, quai el Challenge Family, Rev3 o el TriStar.Altri avegnimenti i xe, invece, organixai da squadre o grupi privai, che i xe asociai o manco a una federasion nasionae.
Campionài mondiài de triathlon Distansa Sprint (ITU) Òmani Anno 28px 28px 28px 2010 23px Jonathan Brownlee 23px Tim Don 23px David Hauss 2011 23px Jonathan Brownlee 23px Javier Gómez 23px Alistair Brownlee
Dòne Anno 28px 28px 28px 2010 23px Lisa Nordén23px Emma Moffatt23px Daniela Ryf 2011 23px Barbara Riveros Diaz23px Emma Jackson23px Andrea Hewitt
Distansa Olimpica (ITU) Òmani Anno 28px 28px 28px 1989 23px Mark Allen 23px Glenn Cook 23px Rick Wells 1990 23px Greg Welch 23px Brad Beven 23px Stephen Foster 1991 23px Miles Stewart 23px Rick Wells 23px Mike Pigg 1992 23px Simon Lessing 23px Rainer Müller-Hörner 23px Rob Barel 1993 23px Spencer Smith 23px Simon Lessing 23px Hamish Carter 1994 23px Spencer Smith23px Brad Beven 23px Ralf Eggert 1995 23px Simon Lessing 23px Brad Beven23px Ralf Eggert 1996 23px Simon Lessing 23px Luc Van Lierde 23px Leandro Macedo 1997 23px Chris McCormack 23px Hamish Carter 23px Simon Lessing 1998 23px Simon Lessing 23px Paul Amey 23px Miles Stewart 1999 23px Dmitriy Gaag 23px Simon Lessing 23px Miles Stewart 2000 23px Olivier Marceau 23px Peter Robertson 23px Craig Walton 200123px Peter Robertson 23px Chris Hill 23px Craig Walton 2002 23px Iván Raña 23px Peter Robertson 23px Andrew Johns 2003 23px Peter Robertson 23px Iván Raña 23px Olivier Marceau 2004 23px Bevan Docherty 23px Iván Raña 23px Dmitriy Gaag 2005 23px Peter Robertson 23px Reto Hug 23px Brad Kahlefeldt 2006 23px Tim Don 23px Hamish Carter 23px Frédéric Belaubre 2007 23px Daniel Unger 23px Javier Gómez 23px Brad Kahlefeldt 2008 23px Javier Gómez 23px Bevan Docherty 23px Reto Hug 2009 23px Alistair Brownlee 23px Javier Gómez 23px Maik Petzold 2010 23px Javier Gómez 23px Steffen Justus 23px Brad Kahlefeldt 2011 23px Alistair Brownlee 23px Jonathan Brownlee 23px Javier Gómez 2012 23px Jonathan Brownlee 23px Javier Gómez 23px Dmitry Polyansky 2013 23px Javier Gómez 23px Jonathan Brownlee 23px Mario Mola 2014 23px Javier Gómez23px Mario Mola 23px Jonathan Brownlee 2015 23px Javier Gómez23px Mario Mola 23px Vincent Luis
Dòne Anno 28px 28px 28px 1989 23px Erin Baker 23px Jan Ripple 23px Laurie Samuelson 1990 23px Karen Smyers 23px Carol Montgomery 23px Joy Hansen 1991 23px Joanne Ritchie 23px Terri Smith 23px Michellie Jones 1992 23px Michellie Jones 23px Joanne Ritchie23px Melissa Mantak 1993 23px Michellie Jones 23px Karen Smyers 23px Joanne Ritchie 1994 23px Emma Carney23px Anette Pedersen 23px Sarah Harrow 1995 23px Karen Smyers 23px Jackie Gallagher23px Joy Leutner 1996 23px Jackie Gallagher 23px Emma Carney 23px Carol Montgomery 1997 23px Emma Carney 23px Jackie Gallagher 23px Michellie Jones 1998 23px Joanne King 23px Michellie Jones 23px Evelyn Williamson 1999 23px Loretta Harrop 23px Jackie Gallagher 23px Emma Carney 2000 23px Nicole Hackett 23px Carol Montgomery 23px Michellie Jones 200123px Siri Lindley 23px Michellie Jones 23px Joanna Zeiger 2002 23px Leanda Cave 23px Barbara Lindquist 23px Michelle Dillon 2003 23px Emma Snowsill 23px Laura Bennett 23px Michellie Jones 2004 23px Sheila Taormina 23px Loretta Harrop 23px Laura Bennett 2005 23px Emma Snowsill 23px Annabel Luxford 23px Laura Bennett 2006 23px Emma Snowsill 23px Vanessa Fernandes 23px Felicity Abram 2007 23px Vanessa Fernandes 23px Emma Snowsill 23px Laura Bennett 2008 23px Helen Tucker 23px Sarah Haskins 23px Samantha Warriner 2009 23px Emma Snowsill 23px Lisa Nordén 23px Andrea Hewitt 2010 23px Emma Snowsill 23px Nicola Spirig 23px Lisa Nordén 2011 23px Helen Tucker 23px Andrea Hewitt 23px Sarah Groff 2012 23px Lisa Nordén 23px Anne Haug 23px Andrea Hewitt 2013 23px Non Stanford 23px Jodie Stimpson 23px Anne Haug 2014 23px Gwen Jorgensen23px Sarah Groff 23px Andrea Hewitt 2015 23px Gwen Jorgensen23px Andrea Hewitt 23px Sarah True
Distansa Longa (ITU) Òmani Anno 28px 28px 28px 1994 23px Rob Barel 23px Lothar Leder 23px Yves Cordier1995 23px Simon Lessing 23px Luc Van Lierde 23px Peter Reid1996 23px Greg Welch23px Luc Van Lierde23px Spencer Smith199723px Luc Van Lierde 23px Rob Barel 23px Jean-Christophe Guinchard1998 23px Luc Van Lierde 23px Rob Barel 23px Peter Sandvang199923px Peter Sandvang23px Torbjørn Sindballe 23px Massimo Guadagni200023px Peter Sandvang 23px Cyrille Neveu 23px François Chabaud200123px Peter Sandvang23px Rasmus Henning 23px Jonas Colting200223px Cyrille Neveu23px Torbjørn Sindballe23px Rutger Beke2003 23px Eneko Llanos23px Rutger Beke 23px Xavier Le Floch200423px Torbjørn Sindballe23px Jonas Colting23px Marino Vanhoenacker2005 23px Viktor Zyemtsev23px Marino Vanhoenacker 23px Xavier Le Floch200623px Torbjørn Sindballe23px Craig Alexander23px Marino Vanhoenacker2007 23px Julien Loy 23px Xavier Le Floch23px Sébastien Berlier2008 23px Julien Loy23px François Chabaud23px Martin Jensen2009 23px Timothy O'Donnell23px Sylvain Sudrie23px Martin Jensen201023px Sylvain Sudrie23px Timothy O'Donnell23px François Chabaud201123px Jordan Rapp23px Joe Gambles23px Sylvain Sudrie201223px Chris McCormack23px Eneko Llanos 23px Dirk Bockel201323px Bertrand Billard23px Terenzo Bozzone23px Dirk Bockel201423px Bertrand Billard23px Sylvain Sudrie23px Cyril Viennot201523px Cyril Viennot23px Martin Jensen23px Joe Skipper
Dòne Anno 28px 28px 28px 199423px Isabelle Mouthon-Michellys23px Karen Smyers23px Lydie Reuze199523px Jenny Rose 23px Ute Schaefer 23px Ines Estedt199623px Karen Smyers23px Sophie Delemer23px Suzanne Nielsen1997 23px Ines Estedt23px Isabelle Mouthon-Michellys23px Virginia Berasategui199823px Rina Hill23px Lena Wahlqvist23px Megumi Shigaki199923px Suzanne Nielsen23px Joanne King23px Jasmine Haemmerle200023px Isabelle Mouthon-Michellys23px Natascha Badmann23px Daniela Locarno200123px Lisbeth Kristensen23px Lena Wahlqvist23px Suzanne Nielsen200223px Ines Estedt23px Kathleen Smet23px Virginia Berasategui200323px Virginia Berasategui23px Ana Burgos 23px Sione Jongstra200423px Tamara Kozulina23px Lisbeth Kristensen 23px Sione Jongstra200523px Kathleen Smet23px Mirinda Carfrae23px Tina Boman200623px Bella Comerford23px Edith Niederfriniger23px Johanna Daumas200723px Leanda Cave 23px Erika Csomor23px Catriona Morrison200823px Chrissie Wellington23px Charlotte Kolters 23px Yvonne van Vlerken200923px Jodie Swallow23px Rebekah Keat23px Delphine Pelletier201023px Caroline Steffen 23px Yvonne van Vlerken23px Virginia Berasategui201123px Rachel Joyce23px Leanda Cave23px Meredith Kessler201223px Caroline Steffen23px Camilla Pedersen23px Jodie Swallow 201323px Melissa Hauschildt23px Camilla Pedersen23px Rachel Mcbride201423px Camilla Pedersen23px Kaisa Lehtonen23px Andrea Hewitt201523px Mary Beth Ellis23px Camilla Pedersen23px Kaisa Lehtonen
Campionài Olinpici Òmani Avegnimento 28px 28px 28px Sydney 2000 23px Simon Whitfield 23px Stephan Vuckovic 23px Jan ŘehulaAtene 200423px Hamish Carter23px Bevan Docherty23px Sven RiedererPechin 2008 23px Jan Frodeno23px Simon Whitfield23px Bevan DochertyLondra 2012 23px Alistair Brownlee23px Javier Gómez 23px Jonathan Brownlee
Dòne Avegnimento 28px 28px 28px Sydney 200023px Brigitte McMahon23px Michellie Jones23px Magali MessmerAtene 200423px Kate Allen 23px Loretta Harrop23px Susan WilliamsPechin 2008 23px Emma Snowsill23px Vanessa Fernandes23px Emma MoffattLondra 201223px Nicola Spirig23px Lisa Norden23px Erin Densham
Campionài Mondiài WTC Distansa 70.3 Òmani Anno 28px 28px 28px 200623px Craig Alexander23px Simon Lessing23px Richie Cunningham 200723px Andy Potts 23px Oscar Galíndez23px Andrew Johns200823px Terenzo Bozzone23px Andreas Raelert23px Richie Cunningham 200923px Michael Raelert23px Daniel Fontana23px Matthew Reed201023px Michael Raelert23px Filip Ospalý23px Timothy O'Donnell201123px Craig Alexander23px Chris Lieto23px Jeff Symonds201223px Sebastian Kienle23px Craig Alexander23px Bevan Docherty201323px Sebastian Kienle23px Terenzo Bozzone23px Joe Gambles 201423px Javier Gómez23px Jan Frodeno23px Tim Don201423px Jan Frodeno 23px Sebastian Kienle 23px Javier Gómez
Dòne Avegnimento 28px 28px 28px 200623px Samantha McGlone23px Lisa Bentley23px Mirinda Carfrae200723px Mirinda Carfrae23px Samantha McGlone23px Leanda Cave200823px Joanna Zeiger23px Mary Beth Ellis23px Becky Lavelle200923px Julie Dibens23px Mary Beth Ellis23px Magali Tisseyre201023px Jodie Swallow 23px Leanda Cave23px Magali Tisseyre201123px Melissa Rollison23px Karin Thürig23px Linsey Corbin201223px Leanda Cave23px Kelly Williamson 23px Heather Jackson2013 23px Melissa Hauschildt 23px Heather Jackson 23px Annabel Luxford201423px Daniela Ryf 23px Jodie Swallow 23px Heather Wurtele201423px Daniela Ryf 23px Heather Wurtele 23px Anja Beranek
Distansa Ironman Òmani