Debutants
Aljaž Omrzel is the youngest debutant in GP Slovenian Istria in 2019. There are 45 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | OMRZEL Aljaž | Adria Mobil | 18y + 55d |
| 2 | FORRAY Andras | Pannon Cycling Team | 18y + 87d |
| 3 | MATEK Lovro | Meridiana Kamen Team | 18y + 115d |
| 4 | SKOK Anže | Ljubljana Gusto Santic | 18y + 162d |
| 5 | STEININGER Fabian | Team Felbermayr - Simplon Wels | 18y + 165d |
| 6 | ENGELHARDT Felix | Tirol KTM Cycling Team | 18y + 189d |
| 7 | MENEGOTTO Jacopo | Biesse Carrera | 18y + 213d |
| 8 | BLEYER Paul | Team Felbermayr - Simplon Wels | 18y + 276d |
| 9 | HOLLAND Michael | SPORT.LAND. Niederösterreich Selle SMP - St. Rich | 18y + 320d |
| 10 | FETTER Erik | Pannon Cycling Team | 18y + 325d |
| 11 | CIUCCARELLI Riccardo | Sangemini - Trevigiani - MG.Kvis | 19y + 33d |
| 12 | COLLEONI Kevin | Biesse Carrera | 19y + 105d |
| 13 | BUDIMIR Kristijan | Meridiana Kamen Team | 19y + 161d |
| 14 | GAMPER Mario | Tirol KTM Cycling Team | 19y + 205d |
| 15 | KIERNER Florian | Team Felbermayr - Simplon Wels | 19y + 283d |
| 16 | POTOČKI Viktor | Ljubljana Gusto Santic | 19y + 334d |
| 17 | AMADIO Emanuele | Cycling Team Friuli | 20y + 4d |
| 18 | VRHOVNIK Luka | Ljubljana Gusto Santic | 20y + 81d |
| 19 | MANGERTSEDER Matthias | Team Felbermayr - Simplon Wels | 20y + 92d |
| 20 | MARENZI Lorenzo | Meridiana Kamen Team | 20y + 139d |
| 21 | SZABÓ Miklos | Pannon Cycling Team | 20y + 159d |
| 22 | RIVI Samuele | Tirol KTM Cycling Team | 20y + 289d |
| 23 | OTRUBA Jakub | Elkov - Author Cycling Team | 21y + 25d |
| 24 | DINA Daniel | Pannon Cycling Team | 21y + 109d |
| 25 | GRUBER Julian | SPORT.LAND. Niederösterreich Selle SMP - St. Rich | 21y + 143d |
| 26 | ZORKO Marin | Meridiana Kamen Team | 21y + 200d |
| 27 | KOLLER Jan | Team Felbermayr - Simplon Wels | 21y + 241d |
| 28 | NEUHAUSER Marcel | Tirol KTM Cycling Team | 21y + 364d |
| 29 | COLOMBO Raul | Biesse Carrera | 22y + 189d |
| 30 | DINA Márton | Pannon Cycling Team | 22y + 319d |
| 31 | NEUMAN Dominik | Elkov - Author Cycling Team | 23y + 124d |
| 32 | DELCÒ Lorenzo | Biesse Carrera | 23y + 341d |
| 33 | ACHTERBERG Yannik | Maloja Pushbikers | 25y + 29d |
| 34 | DI SANTE Antonio | Sangemini - Trevigiani - MG.Kvis | 25y + 152d |
| 35 | MOSCA Jacopo | D'Amico - UM Tools | 25y + 179d |
| 36 | GABBURO Davide | Neri Sottoli - Selle Italia - KTM | 25y + 329d |
| 37 | MARENGO Umberto | Neri Sottoli - Selle Italia - KTM | 26y + 218d |
| 38 | HNÍK Karel | Elkov - Author Cycling Team | 27y + 199d |
| 39 | RAFFAELE Angelo | D'Amico - UM Tools | 27y + 310d |
| 40 | BONIFAZIO Leonardo | Sangemini - Trevigiani - MG.Kvis | 27y + 341d |
| 41 | BONGIORNO Francesco Manuel | Neri Sottoli - Selle Italia - KTM | 28y + 176d |
| 42 | SZATMARY Andras | Pannon Cycling Team | 28y + 187d |
| 43 | MARTINELLI Ivan | D'Amico - UM Tools | 28y + 236d |
| 44 | ZARDINI Edoardo | Neri Sottoli - Selle Italia - KTM | 29y + 114d |
| 45 | VISCONTI Giovanni | Neri Sottoli - Selle Italia - KTM | 36y + 42d |