Most racedays with other riders
Riders sorted by the number of times they started in the same race as Jan Iwanowski.
| # | Rider | Number of races |
|---|---|---|
| 1 | STOLARCZYK Tadeusz | 1 |
| 2 | LAZARCZYK Boleslaw | 1 |
| 3 | BUKOWSKI Roman | 1 |
| 4 | OLSZEWSKI Tadeusz | 1 |
| 5 | KOMORNICZAK Julian | 1 |
| 6 | PIEGAT Stefan | 1 |
| 7 | VAVERKA Karel | 1 |
| 8 | VIDEVALL Berg | 1 |
| 9 | RYDMARK Olle | 1 |
| 10 | CZYŻ Henryk | 1 |
| 11 | MOTYKA Wladyslaw | 1 |
| 12 | PUKLICKY Lubos | 1 |
| 13 | KROLIKOWSKI Wojciech | 1 |
| 14 | PAVLAS Josef | 1 |
| 15 | GLINKA Mieczyslaw | 1 |
| 16 | TUORA Tadeusz | 1 |
| 17 | KEBRLE Josef | 1 |
| 18 | SZALAY Antal | 1 |
| 19 | WANDOR Władysław | 1 |
| 20 | WRZESIŃSKI Wacław | 1 |
| 21 | PERSSON Ölle | 1 |
| 22 | WEGLENDA Wilhelm | 1 |
| 23 | PIETRASZEWSKI Lucjan | 1 |
| 24 | RZEŹNICKI Marian | 1 |
| 25 | NAPIERAŁA Bolesław | 1 |
| 26 | GRZELAK Stanisław | 1 |
| 27 | KAPIAK Józef | 1 |
| 28 | WÓJCIK Wacław | 1 |
| 29 | LIPIŃSKI Jerzy | 1 |
| 30 | STARZYŃSKI Wacław | 1 |
| 31 | TARGOŃSKI Eugeniusz | 1 |
| 32 | BANSKI Kazimierz | 1 |
| 33 | MAEDI Bela | 1 |
| 34 | WOJCIESZEK Ludwik | 1 |
| 35 | PAPROCKI Walerian | 1 |
| 36 | NOWOCZEK Robert | 1 |