Most grandtour starts by competitors
Number of starts in grand tours before the start of National Championships Japan MU23 - ITT 2021.
| Pos. | Rider | Starts | Tour | Giro | Vuelta |
|---|---|---|---|---|---|
| 1 | KOIDE Itsuki | 0 | - | - | - |
| 2 | UDAGAWA Rui | 0 | - | - | - |
| 3 | TERASAWA Andrew | 0 | - | - | - |
| 4 | HONDA Haruhi | 0 | - | - | - |
| 5 | WATANABE Kazuki | 0 | - | - | - |
| 6 | AMANO Takeharu | 0 | - | - | - |
| 7 | NISHIMOTO Kenzaburo | 0 | - | - | - |
| 8 | KAWASAKI Miori | 0 | - | - | - |
| 9 | IZAWA Masaya | 0 | - | - | - |
| 10 | MATSUBARA Sosuke | 0 | - | - | - |
| 11 | MATSUDA Shoi | 0 | - | - | - |
| 12 | YUASA Hirotaka | 0 | - | - | - |
| 13 | KAWANO Shouki | 0 | - | - | - |
| 14 | YAMAMOTO Tetsuo | 0 | - | - | - |
| 15 | YAMADA Takumi | 0 | - | - | - |
| 16 | KOJIMA Naoki | 0 | - | - | - |
| 17 | KAYAMA Hiryu | 0 | - | - | - |
| 18 | HIRAI Kosuke | 0 | - | - | - |
| 19 | MIYAZAKI Taishi | 0 | - | - | - |
| 20 | TODOME Yuhi | 0 | - | - | - |