All available race results Jef Dervaes
| Date | Race | Rank |
| 24/08 | Antwerpen - Menen | 1 |
Rider information for 1924
| Rank | 449 |
| Score | 31 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 26/07 | Paris - Menin | 9 |
Rider information for 1925
| Rank | 562 |
| Score | 20 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 02/05 | Paris - Tours | 29 |
| Tour de Belgique | ||
| 12/05 | Stage 1 | 10 |
| 13/05 | Stage 2 | 20 |
| 15/05 | Stage 3 | 2 |
| 16/05 | Stage 4 | 11 |
| 16/05 | General Classification | 9 |
| 08/08 | Paris - Calais | 5 |
| 22/08 | Groote Scheldeprijs | 1 |
Rider information for 1926
| Rank | 109 |
| Score | 270 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Labor - Dunlop |
| Date | Race | Rank |
| Tour de Belgique | ||
| 04/05 | Stage 1 | 5 |
| 05/05 | Stage 2 | 2 |
| 07/05 | Stage 3 | 10 |
| 08/05 | Stage 4 | 14 |
| 08/05 | General Classification | 4 |
| 31/07 | Omloop van Noord-België | 4 |
| 18/09 | Groote Scheldeprijs | 7 |
Rider information for 1927
| Rank | 140 |
| Score | 220 |
| 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 |
| 01/05 | Grote 1 Mei-Prijs Hoboken | 4 |
| 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 | 822 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 17/03 | Ronde van Vlaanderen | 1 |
| 01/05 | Grote 1 Mei-Prijs Hoboken | 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 | 34 |
| Score | 1010 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Génial Lucifer - Hutchinson |
| Date | Race | Rank |
| 20/04 | Paris - Roubaix | 27 |
| 01/05 | Grote 1 Mei-Prijs Hoboken | 1 |
| 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 | 112 |
| Score | 296 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | La Nordiste - Wolber |
| Date | Race | Rank |
| 22/03 | Ronde van Vlaanderen | 30 |
| 05/04 | Paris - Roubaix | 21 |
| 01/05 | Grote 1 Mei-Prijs Hoboken | 1 |
| 10/05 | Paris - Lille | 1 |
Rider information for 1931
| Rank | 145 |
| Score | 202 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | La Nordiste - Wolber |
| Date | Race | Rank |
| 10/04 | Omloop der Vlaamsche Gewesten | 14 |
Rider information for 1932
| Rank | 994 |
| Score | 6 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 01/05 | Grote 1 Mei-Prijs Hoboken | 14 |
Rider information for 1933
| Rank | 877 |
| Score | 7 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Depas |
| Date | Race | Rank |
| Tour de Belgique | ||
| 06/06 | Stage 1 | 83 |
| 31/07 | Scheldeprijs - Schoten | 11 |
Rider information for 1934
| Rank | 1295 |
| Score | 3 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
No results available in season 1935.
Rider information for 1935
| Rank | 1429 |
| Score | 0 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |
No results available in season 1936.
Rider information for 1936
| Rank | 1555 |
| Score | 0 |
| Name | Jef DERVAES |
| Country | Belgium |
| Team | Individual |