Debutants
Jhonatan Narváez is the youngest debutant in Donostia San Sebastian Klasikoa in 2018. There are 49 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | NARVÁEZ Jhonatan | Quick-Step Floors | 21y + 153d |
| 2 | BERNAL Egan | Team Sky | 21y + 203d |
| 3 | GAUDU David | Groupama - FDJ | 21y + 298d |
| 4 | HINDLEY Jai | Team Sunweb | 22y + 91d |
| 5 | MARTÍNEZ Daniel Felipe | Team EF Education First - Drapac p/b Cannondale | 22y + 101d |
| 6 | BARTHE Cyril | Euskadi - Murias | 22y + 171d |
| 7 | KNOX James | Quick-Step Floors | 22y + 273d |
| 8 | RIABUSHENKO Alexandr | UAE Team Emirates | 22y + 296d |
| 9 | ARANBURU Alex | Caja Rural - Seguros RGA | 22y + 319d |
| 10 | CAVAGNA Rémi | Quick-Step Floors | 22y + 359d |
| 11 | FABBRO Matteo | Team Katusha Alpecin | 23y + 116d |
| 12 | GEOGHEGAN HART Tao | Team Sky | 23y + 127d |
| 13 | IRIZAR Julen | Euskadi - Murias | 23y + 131d |
| 14 | ASGREEN Kasper | Quick-Step Floors | 23y + 177d |
| 15 | SOTO Nelson Andrés | Caja Rural - Seguros RGA | 24y + 46d |
| 16 | TOLHOEK Antwan | Team LottoNL-Jumbo | 24y + 97d |
| 17 | MÜHLBERGER Gregor | BORA - hansgrohe | 24y + 122d |
| 18 | SCOTSON Miles | BMC Racing Team | 24y + 198d |
| 19 | GROßSCHARTNER Felix | BORA - hansgrohe | 24y + 224d |
| 20 | SOLER Marc | Movistar Team | 24y + 255d |
| 21 | TUSVELD Martijn | Team Sunweb | 24y + 329d |
| 22 | AMEZQUETA Julen | Caja Rural - Seguros RGA | 24y + 357d |
| 23 | LASTRA Jonathan | Caja Rural - Seguros RGA | 25y + 62d |
| 24 | SMIT Willie | Team Katusha Alpecin | 25y + 218d |
| 25 | CUBERO Jorge | Burgos - BH | 25y + 271d |
| 26 | FRISON Frederik | Lotto Soudal | 26y + 7d |
| 27 | KOZHATAYEV Bakhtiyar | Astana Pro Team | 26y + 129d |
| 28 | BIDARD François | AG2R La Mondiale | 26y + 138d |
| 29 | BERNARD Julien | Trek - Segafredo | 26y + 140d |
| 30 | ITURRIA Mikel | Euskadi - Murias | 26y + 141d |
| 31 | RODRÍGUEZ Sergio | Euskadi - Murias | 26y + 163d |
| 32 | SKUJIŅŠ Toms | Trek - Segafredo | 27y + 50d |
| 33 | RUBIO Diego | Burgos - BH | 27y + 52d |
| 34 | THEUNS Edward | Team Sunweb | 27y + 96d |
| 35 | BEVIN Patrick | BMC Racing Team | 27y + 170d |
| 36 | HIRT Jan | Astana Pro Team | 27y + 195d |
| 37 | EZQUERRA Jesús | Burgos - BH | 27y + 247d |
| 38 | SIMÓN Jordi | Burgos - BH | 27y + 332d |
| 39 | PERNSTEINER Hermann | Bahrain Merida Pro Cycling Team | 27y + 362d |
| 40 | VAN ASBROECK Tom | Team EF Education First - Drapac p/b Cannondale | 28y + 107d |
| 41 | BOL Jetse | Burgos - BH | 28y + 330d |
| 42 | BIZKARRA Mikel | Euskadi - Murias | 28y + 348d |
| 43 | BAGÜES Aritz | Euskadi - Murias | 28y + 350d |
| 44 | BRAVO Garikoitz | Euskadi - Murias | 29y + 4d |
| 45 | LAENGEN Vegard Stake | UAE Team Emirates | 29y + 178d |
| 46 | VAN STAEYEN Michael | Cofidis, Solutions Crédits | 29y + 356d |
| 47 | TORRES Pablo | Burgos - BH | 30y + 249d |
| 48 | BAUER Jack | Mitchelton-Scott | 33y + 119d |
| 49 | SCHILLINGER Andreas | BORA - hansgrohe | 35y + 22d |