Most racedays with other riders
Riders sorted by the number of times they started in the same race as Hiroaki Harada.
| # | Rider | Number of races |
|---|---|---|
| 1 | SANO Junya | 22 |
| 2 | IRIBE Shotaro | 22 |
| 3 | ISHIBASHI Manabu | 21 |
| 4 | KUROEDA Shiki | 20 |
| 5 | KIMURA Keisuke | 20 |
| 6 | SUMIYOSHI Kota | 19 |
| 7 | KOMORI Ryohei | 19 |
| 8 | ABE Takayuki | 18 |
| 9 | SUZUKI Yuzuru | 18 |
| 10 | HATANAKA Yusuke | 17 |
| 11 | MINATO Ryo | 17 |
| 12 | ONODERA Rei | 17 |
| 13 | YAMAMOTO Genki | 17 |
| 14 | YOSHIOKA Naoya | 16 |
| 15 | YASUHARA Daiki | 16 |
| 16 | NAKAJIMA Yasuharu | 16 |
| 17 | OKA Atsushi | 15 |
| 18 | SUZUKI Ryu | 15 |
| 19 | HAYAKAWA Tomohiro | 15 |
| 20 | MASUDA Nariyuki | 14 |
| 21 | OKUBO Jin | 14 |
| 22 | ARASHIRO Yudai | 14 |
| 23 | KOISHI Yuma | 14 |
| 24 | NAKANE Hideto | 14 |
| 25 | ITO Masakazu | 14 |
| 26 | AMEZAWA Takeaki | 13 |
| 27 | WATANABE Shotaro | 13 |
| 28 | TAKAGI Michinari | 13 |
| 29 | TORIBIO José Vicente | 13 |
| 30 | TOKUDA Suguru | 12 |
| 31 | DOI Yukihiro | 12 |
| 32 | OKAMOTO Hayato | 12 |
| 33 | HIRATSUKA Yoshimitsu | 12 |
| 34 | YOSHIDA Hayato | 12 |
| 35 | FERNÁNDEZ Airán | 12 |
| 36 | TANI Junsei | 11 |
| 37 | SHIBATA Masayuki | 11 |
| 38 | SHIMOJIMA Masaki | 11 |
| 39 | LEBAS Thomas | 11 |
| 40 | YAMAMOTO Masaki | 11 |
| 41 | KUBOKI Kazushige | 11 |
| 42 | YOKOYAMA Kota | 11 |
| 43 | KUROEDA Saya | 11 |
| 44 | HORI Takaaki | 11 |
| 45 | NISHIO Hayato | 10 |
| 46 | PRADES Benjamín | 10 |
| 47 | OBATA Kaoru | 10 |
| 48 | UCHIMA Kohei | 10 |
| 49 | KISHI Takahito | 10 |
| 50 | MAGOSAKI Daiki | 10 |