Most racedays with other riders
Riders sorted by the number of times they started in the same race as Takahiro Koyama.
| # | Rider | Number of races |
|---|---|---|
| 1 | IRIBE Shotaro | 17 |
| 2 | YAMAMOTO Masaki | 16 |
| 3 | KUSABA Keigo | 15 |
| 4 | ARASHIRO Yudai | 14 |
| 5 | YOKOYAMA Kota | 14 |
| 6 | MAGOSAKI Daiki | 14 |
| 7 | YOSHIOKA Naoya | 13 |
| 8 | OKAMOTO Hayato | 13 |
| 9 | SUMIYOSHI Kota | 12 |
| 10 | TOMIO Daichi | 12 |
| 11 | YASUHARA Daiki | 12 |
| 12 | ONODERA Rei | 12 |
| 13 | KIMURA Keisuke | 11 |
| 14 | ITO Masakazu | 11 |
| 15 | MASUDA Nariyuki | 11 |
| 16 | YAMAMOTO Genki | 11 |
| 17 | KUROEDA Shiki | 11 |
| 18 | SUZUKI Yuzuru | 11 |
| 19 | ABE Takayuki | 11 |
| 20 | HATANAKA Yusuke | 10 |
| 21 | ISHIGAMI Masahiro | 10 |
| 22 | ISHIHARA Yuki | 10 |
| 23 | NISHIO Hayato | 10 |
| 24 | TOKUDA Suguru | 10 |
| 25 | LEBAS Thomas | 10 |
| 26 | YOSHIDA Hayato | 10 |
| 27 | ASO Keisuke | 9 |
| 28 | UCHIMA Kohei | 9 |
| 29 | KOBAYASHI Marino | 9 |
| 30 | SHIBATA Masayuki | 9 |
| 31 | KUROEDA Saya | 9 |
| 32 | NAKAMURA Keisuke | 9 |
| 33 | OKA Atsushi | 9 |
| 34 | TOBARU Hayato | 9 |
| 35 | NAKAJIMA Yasuharu | 8 |
| 36 | YOKOTSUKA Kohei | 8 |
| 37 | KOMORI Ryohei | 8 |
| 38 | ISHIBASHI Manabu | 8 |
| 39 | MONIER Damien | 8 |
| 40 | SUZUKI Ryu | 8 |
| 41 | KAZAMA Shoma | 8 |
| 42 | SANO Junya | 8 |
| 43 | TAKAGI Michinari | 8 |
| 44 | KANEKO Sohei | 8 |
| 45 | HIRATSUKA Yoshimitsu | 8 |
| 46 | MINATO Ryo | 8 |
| 47 | NAKAGAWA Ken | 8 |
| 48 | OMACHI Kento | 8 |
| 49 | TORIBIO José Vicente | 8 |
| 50 | OMAE Kakeru | 8 |