All available race results Karel Clapdorp
| Date | Race | Rank |
| 17/03 | Ronde van Vlaanderen | 20 |
| Tour de Belgique | ||
| 08/05 | Stage 1 | 28 |
Rider information for 1929
| Rank | 282 |
| Score | 84 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 06/07 | Omloop der 3 Zustersteden | 16 |
| 14/09 | Omloop der Vlaamsche Gewesten | 14 |
Rider information for 1930
| Rank | 747 |
| Score | 10 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 03/06 | Stage 1 | 49 |
| 04/06 | Stage 2 | 49 |
| 06/06 | Stage 3 | 44 |
Rider information for 1931
| Rank | 1764 |
| Score | 0 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Individual |
No results available in season 1933.
Rider information for 1933
| Rank | 1245 |
| Score | 0 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | 't Belfort |
| Date | Race | Rank |
| 18/03 | Ronde van Vlaanderen | 46 |
Rider information for 1934
| Rank | 1113 |
| Score | 6 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Dossche Sport |
| Date | Race | Rank |
| 22/04 | Ronde van Limburg | 9 |
| Tour de Belgique | ||
| 26/05 | Stage 1 | 92 |
| 27/05 | Stage 2 | 73 |
| 29/05 | Stage 3 | 64 |
| 30/05 | Stage 4 | 51 |
Rider information for 1935
| Rank | 860 |
| Score | 9 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Dossche Sport |
No results available in season 1936.
Rider information for 1936
| Rank | 1320 |
| Score | 1 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Dossche Sport - Titan |
No results available in season 1937.
Rider information for 1937
| Rank | 1101 |
| Score | 0 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Wim Sport |
No results available in season 1938.
Rider information for 1938
| Rank | 1198 |
| Score | 0 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Dossche Sport |
No results available in season 1939.
Rider information for 1939
| Rank | 1071 |
| Score | 2 |
| Name | Karel CLAPDORP |
| Country | Belgium |
| Team | Individual |