Debutants
Ákos Haiszer is the youngest debutant in World Championships MU - Road Race in 2004. There are 116 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | HAISZER Ákos | Hungary | 18y + 275d |
| 2 | RĀCENĀJS Kristofers | Latvia | 18y + 293d |
| 3 | VOLUNGEVICIUS Justas | Lithuania | 18y + 306d |
| 4 | WESTPHAL Carlo | Germany | 18y + 311d |
| 5 | CORNU Dominique | Belgium | 18y + 357d |
| 6 | BUIVIDAS Andrius | Lithuania | 19y + 51d |
| 7 | DI GRÉGORIO Rémy | France | 19y + 62d |
| 8 | CIOBAN Denis | Moldova | 19y + 96d |
| 9 | GUAMÁ Byron | Ecuador | 19y + 109d |
| 10 | SCHLECK Andy | Luxembourg | 19y + 113d |
| 11 | ROJAS José Joaquín | Spain | 19y + 115d |
| 12 | SAMOILAU Branislau | Belarus | 19y + 129d |
| 13 | NAVARRETE Segundo | Ecuador | 19y + 133d |
| 14 | ZSOMBÓK Daniel | Hungary | 19y + 162d |
| 15 | CRANE Matthew | United States | 19y + 169d |
| 16 | REUS Kai | Netherlands | 19y + 204d |
| 17 | REDONDO José Antonio | Spain | 19y + 210d |
| 18 | VELITS Martin | Slovakia | 19y + 223d |
| 19 | VELITS Peter | Slovakia | 19y + 223d |
| 20 | ALALUUSUA Juha-Matti | Finland | 19y + 230d |
| 21 | LUND Anders | Denmark | 19y + 230d |
| 22 | KOVDIY Alexandr | Kazakhstan | 19y + 235d |
| 23 | SAMBRIS Ruslan | Moldova | 19y + 238d |
| 24 | FUS Lukáš | Czech Republic | 19y + 242d |
| 25 | NOWOSAD Dmytro | Ukraine | 19y + 259d |
| 26 | LOUBET Julien | France | 19y + 264d |
| 27 | KUSZTOR Péter | Hungary | 19y + 279d |
| 28 | TIERNAN-LOCKE Jonathan | Great Britain | 19y + 280d |
| 29 | BÁRTA Jan | Czech Republic | 19y + 299d |
| 30 | MCQUAID Andrew | Ireland | 19y + 316d |
| 31 | DANNIKER Sergey | Kazakhstan | 19y + 320d |
| 32 | EIBEGGER Markus | Austria | 19y + 351d |
| 33 | DMITRIYEV Valeriy | Kazakhstan | 19y + 357d |
| 34 | GÉRARD Arnaud | France | 19y + 361d |
| 35 | DVIRI Dor | Israel | 20y + 0d |
| 36 | WEYLANDT Wouter | Belgium | 20y + 4d |
| 37 | BERGH Eckhard | South Africa | 20y + 7d |
| 38 | INGELS Nick | Belgium | 20y + 29d |
| 39 | KIŠERLOVSKI Emanuel | Croatia | 20y + 59d |
| 40 | KOGUT Volodymyr | Ukraine | 20y + 65d |
| 41 | KUNITSKI Andrei | Belarus | 20y + 91d |
| 42 | BUCHKO Andriy | Ukraine | 20y + 120d |
| 43 | FARRAR Tyler | United States | 20y + 121d |
| 44 | SANDERSON Nicholas | Australia | 20y + 127d |
| 45 | CARDOSO Filipe | Portugal | 20y + 139d |
| 46 | ŠVAB Miha | Slovenia | 20y + 164d |
| 47 | KOZONTCHUK Dmitry | Russia | 20y + 179d |
| 48 | VASTARANTA Jukka | Finland | 20y + 186d |
| 49 | MARCZYŃSKI Tomasz | Poland | 20y + 209d |
| 50 | DE MAAR Marc | Netherlands | 20y + 229d |
| 51 | OCHOA Richard | Venezuela | 20y + 230d |
| 52 | O'BRIEN Paídi | Ireland | 20y + 231d |
| 53 | MUSTONEN Andrei | Estonia | 20y + 241d |
| 54 | GARCÍA Artur Alberto | Venezuela | 20y + 249d |
| 55 | DE JESUS António Manuel Campos | Portugal | 20y + 255d |
| 56 | MANDRI René | Estonia | 20y + 255d |
| 57 | EVANS Cameron | Canada | 20y + 265d |
| 58 | CASSIDY Tim | Ireland | 20y + 280d |
| 59 | PAUWELS Serge | Belgium | 20y + 315d |
| 60 | MARTENS Paul | Germany | 20y + 341d |
| 61 | CHACON Miguel Ernesto | Venezuela | 20y + 359d |
| 62 | KEMPS Aaron | Australia | 21y + 21d |
| 63 | MUÑOZ Julian David | Colombia | 21y + 47d |
| 64 | SARABIA Ignacio | Mexico | 21y + 78d |
| 65 | KRÓL Artur | Poland | 21y + 96d |
| 66 | PAGE Kieran | Great Britain | 21y + 152d |
| 67 | HAEDO Lucas Sebastián | Argentina | 21y + 166d |
| 68 | PEDERSEN Martin | Denmark | 21y + 169d |
| 69 | GILMARTÍN Iván | Spain | 21y + 170d |
| 70 | NYBØ Håvard | Norway | 21y + 173d |
| 71 | CANO Alex | Colombia | 21y + 202d |
| 72 | RICHEZE Maximiliano | Argentina | 21y + 208d |
| 73 | ANTÓN Igor | Spain | 21y + 213d |
| 74 | SMELCEROVIC Goran | Serbia and Montenegro | 21y + 275d |
| 75 | CORIONI Claudio | Italy | 21y + 280d |
| 76 | VORGANOV Eduard | Russia | 21y + 299d |
| 77 | POZZOVIVO Domenico | Italy | 21y + 306d |
| 78 | OMULEC Andrej | Slovenia | 21y + 317d |
| 79 | ORTEGA Marco Antonio | Mexico | 21y + 317d |
| 80 | BORRAJO Anibal Andres | Argentina | 21y + 320d |
| 81 | DUGGAN Timothy | United States | 21y + 322d |
| 82 | FLEEMAN Daniel | Great Britain | 21y + 364d |
| 83 | VÍZER Barnabás | Hungary | 22y + 7d |
| 84 | BRANICKY Milan | Slovakia | 22y + 9d |
| 85 | DE KORT Koen | Netherlands | 22y + 23d |
| 86 | MACBURNIE Dustin | Canada | 22y + 37d |
| 87 | SHPILEVSKY Boris | Russia | 22y + 42d |
| 88 | SIUTSOU Kanstantsin | Belarus | 22y + 53d |
| 89 | PICHLER Michael | Austria | 22y + 65d |
| 90 | WOOLCOCK Waylon | South Africa | 22y + 85d |
| 91 | FIRSANOV Sergey | Russia | 22y + 90d |
| 92 | ARN Laurent | Switzerland | 22y + 104d |
| 93 | AZANZA Jorge | Spain | 22y + 107d |
| 94 | MINARD Sébastien | France | 22y + 111d |
| 95 | PIAMONTE Freddy Orlando | Colombia | 22y + 119d |
| 96 | REMME Stian | Norway | 22y + 119d |
| 97 | VARGAS Carlos Fernando | Colombia | 22y + 132d |
| 98 | PRYSHCHEPA Andriy | Ukraine | 22y + 136d |
| 99 | DUMIC Alan | Croatia | 22y + 141d |
| 100 | CABREIRA João | Portugal | 22y + 142d |
| 101 | DOBROVOLSKIS Igors | Latvia | 22y + 145d |
| 102 | SCHUBERT Konstantin | Germany | 22y + 151d |
| 103 | MITOSINKA Robert | Slovakia | 22y + 179d |
| 104 | BOUCHARD HALL Kevin | United States | 22y + 183d |
| 105 | SIMON Jean-Paul | Belgium | 22y + 189d |
| 106 | MARTINS Ricardo Manuel Rodrigues | Portugal | 22y + 199d |
| 107 | RIGOTTO Elia | Italy | 22y + 211d |
| 108 | HUMBERT Ashley | Australia | 22y + 225d |
| 109 | SHINAGAWA Masahiro | Japan | 22y + 229d |
| 110 | SPASIC Dragan | Serbia and Montenegro | 22y + 229d |
| 111 | DAWSON Peter | Australia | 22y + 240d |
| 112 | OLIPHANT Evan | Great Britain | 22y + 267d |
| 113 | JOHANSSON Andreas | Sweden | 22y + 272d |
| 114 | MARIN Andrei | Romania | |
| 115 | MAURI Marco | San Marino | |
| 116 | SANCHEZ Carlos | Ecuador |