All available race results Jef Dervaes
| Date | Race | Rank |
| 24/08 | Antwerpen - Menen | 1 |
Rider information for 1924
| Rank | 442 |
| Score | 30 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 26/07 | Paris - Menin | 9 |
Rider information for 1925
| Rank | 534 |
| Score | 22 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 02/05 | Paris - Tours | 29 |
| 08/08 | Paris - Calais | 5 |
| 22/08 | Groote Scheldeprijs | 1 |
Rider information for 1926
| Rank | 223 |
| Score | 99 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Labor - Dunlop |
| Date | Race | Rank |
| 31/07 | Omloop van Noord-België | 4 |
| 18/09 | Groote Scheldeprijs | 7 |
Rider information for 1927
| Rank | 325 |
| Score | 75 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Labor - Dunlop |
| Date | Race | Rank |
| 18/03 | Criterium der Vlaamsche Gewesten | 2 |
| 08/04 | Paris - Roubaix | 18 |
| 22/04 | Paris - Tours | 6 |
| 10/06 | Groote Scheldeprijs | 1 |
| 26/07 | Bruxelles - Paris | 1 |
| 29/07 | Omloop van Noord-België | 1 |
| 16/08 | World Championships Road Race | 4 |
| 19/08 | Omloop der 3 Zustersteden | 1 |
Rider information for 1928
| Rank | 37 |
| Score | 680 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 17/03 | Ronde van Vlaanderen | 1 |
| 05/05 | Paris - Tours | 7 |
| Tour de Belgique | ||
| 08/05 | Stage 1 | 6 |
| 19/05 | Omloop van Noord-België | 1 |
| 30/07 | Groote Scheldeprijs | 8 |
| 16/08 | World Championships Road Race | 4 |
| 25/08 | Schelde en Maasprijs | 7 |
| 08/09 | Omloop der 3 Zustersteden | 1 |
Rider information for 1929
| Rank | 29 |
| Score | 1020 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Génial Lucifer - Hutchinson |
| Date | Race | Rank |
| 20/04 | Paris - Roubaix | 27 |
| Antwerpen - Brussel - Antwerpen | ||
| 08/06 | Stage 1 | 16 |
| 15/06 | Omloop van Noord-België | 1 |
| 29/07 | Groote Scheldeprijs | 4 |
| 03/08 | Schelde en Maasprijs | 3 |
Rider information for 1930
| Rank | 105 |
| Score | 295 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | La Nordiste - Wolber |
| Date | Race | Rank |
| 22/03 | Ronde van Vlaanderen | 30 |
| 05/04 | Paris - Roubaix | 21 |
| 10/05 | Paris - Lille | 1 |
Rider information for 1931
| Rank | 135 |
| Score | 214 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | La Nordiste - Wolber |
| Date | Race | Rank |
| 10/04 | Omloop der Vlaamsche Gewesten | 14 |
Rider information for 1932
| Rank | 952 |
| Score | 6 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
No results available in season 1933.
Rider information for 1933
| Rank | 833 |
| Score | 7 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Depas |
| Date | Race | Rank |
| 31/07 | Scheldeprijs - Schoten | 11 |
Rider information for 1934
| Rank | 1235 |
| Score | 3 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
No results available in season 1935.
Rider information for 1935
| Rank | 1366 |
| Score | 0 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
No results available in season 1936.
Rider information for 1936
| Rank | 1497 |
| Score | 0 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |