All available race results Ivan Mrenka
| Date | Race | Rank |
| 14/09 | Praha - Karlovy Vary - Praha | 4 |
Rider information for 1969
| Rank | 655 |
| Score | 15 |
| Name | Ivan MRENKA |
| Country | Czechoslovakia |
| Team | Individual |
| Date | Race | Rank |
| 14/09 | Praha - Karlovy Vary - Praha | 4 |
| Rank | 655 |
| Score | 15 |
| Name | Ivan MRENKA |
| Country | Czechoslovakia |
| Team | Individual |