All available race results Leon Devos
| Date | Race | Rank |
| 15/08 | Omloop der 3 Zustersteden | 6 |
| 28/09 | Liège - Bastogne - Liège | 1 |
| 12/10 | Lyon - Marseille | 15 |
Rider information for 1919
| Rank | 40 |
| Score | 586 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 23/05 | Stage 1 | 8 |
| 25/05 | Stage 2 | 22 |
| 27/05 | Stage 3 | 4 |
| 06/06 | Liège - Bastogne - Liège | 6 |
| 20/09 | Omloop der 3 Zustersteden | 8 |
Rider information for 1920
| Rank | 76 |
| Score | 248 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 13/03 | Ronde van Vlaanderen | 18 |
| 27/03 | Paris - Roubaix | 24 |
Rider information for 1921
| Rank | 136 |
| Score | 145 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 19/03 | Ronde van Vlaanderen | 1 |
| 16/04 | Paris - Roubaix | 19 |
| 09/07 | Groote Scheldeprijs | 8 |
Rider information for 1922
| Rank | 37 |
| Score | 638 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 18/03 | Ronde van Vlaanderen | 16 |
| 01/04 | Paris - Roubaix | 35 |
| Tour de Belgique | ||
| 29/04 | Stage 1 | 12 |
| 01/05 | Stage 2 | 10 |
| 13/05 | Paris - Tours | 19 |
| 29/06 | Omloop der 3 Zustersteden | 3 |
Rider information for 1923
| Rank | 69 |
| Score | 407 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | J.B. Louvet - Soly - Dunlop |
| Date | Race | Rank |
| 18/03 | Ronde van Vlaanderen | 13 |
| 06/04 | Paris - Roubaix | 7 |
| 18/05 | Paris - Lille | 24 |
| 10/08 | Liège - Bastogne - Liège | 8 |
| 06/10 | Omloop der 3 Zustersteden | 1 |
Rider information for 1924
| Rank | 79 |
| Score | 414 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Delage |
Rider information for 1925
| Rank | 219 |
| Score | 104 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour du Sud-Ouest | ||
| 13/05 | Stage 2 | 1 |
| 15/05 | Stage 3 | 1 |
| 16/05 | Stage 4 | 3 |
| 19/05 | Stage 6 | 3 |
| 21/05 | Stage 7 | 1 |
| 22/05 | Stage 8 | 3 |
| 24/05 | Stage 9 | 7 |
| 24/05 | General Classification | 2 |
| Tour de France | ||
| 20/06 | Stage 1 | 65 |
| 22/06 | Stage 2 | 6 |
| 24/06 | Stage 3 | 10 |
| 26/06 | Stage 4 | 6 |
| 28/06 | Stage 5 | 26 |
| 30/06 | Stage 6 | 42 |
| 02/07 | Stage 7 | 37 |
| 03/07 | Stage 8 | 6 |
| 05/07 | Stage 9 | 8 |
| 06/07 | Stage 10 | 3 |
| 08/07 | Stage 11 | 27 |
| 10/07 | Stage 12 | 47 |
| 12/07 | Stage 13 | 46 |
| 14/07 | Stage 14 | 28 |
| 16/07 | Stage 15 | 43 |
| 17/07 | Stage 16 | 4 |
| 18/07 | Stage 17 | 22 |
| General Classification | 25 |
Rider information for 1926
| Rank | 64 |
| Score | 471 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Thomann - Dunlop |
| Date | Race | Rank |
| Circuit du Midi | ||
| 14/07 | Stage 1 | 6 |
| 21/08 | Toulouse - Luchon - Toulouse | 10 |
Rider information for 1927
| Rank | 486 |
| Score | 36 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Alcyon - Dunlop |
No results available in season 1931.
Rider information for 1931
| Rank | 803 |
| Score | 6 |
| Name | Leon DEVOS |
| Country | Belgium |
| Team | Individual |