Debutants
William Heffernan is the youngest debutant in Tour de Kumano in 2023. There are 43 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | HEFFERNAN William | CCACHE x Par Küp | 18y + 172d |
| 2 | KAMADA Koki | VC Fukuoka | 19y + 21d |
| 3 | BRITTEN Ryan | CCACHE x Par Küp | 19y + 56d |
| 4 | EATHER Dylan | CCACHE x Par Küp | 19y + 346d |
| 5 | KIM Minjae | LX Cycling Team | 20y + 14d |
| 6 | HASHIKAWA Jo | EF Education-NIPPO Development Team | 20y + 117d |
| 7 | TSUDA Yugi | Kinan Cycling Team | 20y + 164d |
| 8 | HIRAI Anshu | Victoire Hiroshima | 20y + 194d |
| 9 | SATO Hikaru | Saitama Nasu SunBrave | 20y + 221d |
| 10 | GREWAL Devraj | CCACHE x Par Küp | 20y + 249d |
| 11 | PARK Jihwan | LX Cycling Team | 20y + 272d |
| 12 | TODOME Yuhi | EF Education-NIPPO Development Team | 20y + 350d |
| 13 | OKAMOTO Katsuya | Team Bridgestone Cycling | 20y + 358d |
| 14 | JANG Junhyeok | LX Cycling Team | 21y + 4d |
| 15 | YAMAGUCHI Eiji | Levante Fuji Shizuoka | 21y + 132d |
| 16 | EATHER Kurt | CCACHE x Par Küp | 22y + 10d |
| 17 | KARIYA Kazutoshi | EF Education-NIPPO Development Team | 22y + 66d |
| 18 | GULD Daniel | Levante Fuji Shizuoka | 22y + 176d |
| 19 | STEHLI Félix | EF Education-NIPPO Development Team | 22y + 228d |
| 20 | IKEDA Keito | VC Fukuoka | 22y + 258d |
| 21 | SHIRAO Yudai | Saitama Nasu SunBrave | 22y + 270d |
| 22 | YAMAMOTO Tetsuo | Team Bridgestone Cycling | 23y + 78d |
| 23 | LUCERO Jericho | Go For Gold Philippines | 23y + 194d |
| 24 | KIM Euro | LX Cycling Team | 23y + 239d |
| 25 | OLARTE Jaypee | Go For Gold Philippines | 23y + 291d |
| 26 | BETTLES Carter | Victoire Hiroshima | 24y + 274d |
| 27 | WIJFJE Tom | Universe Cycling Team | 25y + 117d |
| 28 | TAKEYAMA Kosuke | JCL Team UKYO | 25y + 193d |
| 29 | MOHD ZARIFF Muhammad Nur Aiman | Terengganu Polygon Cycling Team | 25y + 245d |
| 30 | BORDEOS Warren | Go For Gold Philippines | 25y + 285d |
| 31 | ISHIHARA Yuki | Shimano Racing Team | 26y + 59d |
| 32 | STRAVERS Jarri | Universe Cycling Team | 26y + 61d |
| 33 | SAINBAYAR Jambaljamts | Terengganu Polygon Cycling Team | 26y + 272d |
| 34 | KAZAMA Shoma | Shimano Racing Team | 27y + 12d |
| 35 | CARCUEVA Jonel | Go For Gold Philippines | 28y + 11d |
| 36 | QUITA Ronnilan | Go For Gold Philippines | 28y + 131d |
| 37 | NOBEL Rick | Universe Cycling Team | 28y + 250d |
| 38 | SAWADA Toki | Utsunomiya Blitzen | 29y + 142d |
| 39 | BUIJK Bart | Universe Cycling Team | 30y + 33d |
| 40 | MEIJERS Jeroen | Terengganu Polygon Cycling Team | 30y + 142d |
| 41 | VAN DE MIEROOP Sam | Universe Cycling Team | 31y + 273d |
| 42 | BOUGLAS Georgios | Matrix Powertag | 32y + 198d |
| 43 | NIJSSEN Kenny | Universe Cycling Team | 32y + 270d |