All available race results Léon Despontin
| Date | Race | Rank |
| 12/05 | Bruxelles - Luxembourg - Mondorf | 9 |
| 06/07 | Liège - Bastogne - Liège | 12 |
| 20/07 | Tour de Belgique en ligne | 10 |
Rider information for 1913
| Rank | 169 |
| Score | 121 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 12/04 | Paris - Roubaix | 30 |
| 19/04 | Paris - Tours | 22 |
| Tour de Belgique | ||
| 26/04 | Stage 1 | 14 |
| 28/04 | Stage 2 | 13 |
| 30/04 | Stage 3 | 15 |
Rider information for 1914
| Rank | 128 |
| Score | 126 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Circuit des Champs de Bataille | ||
| 28/04 | Stage 1 | 19 |
| 30/04 | Stage 2 | 32 |
| Tour de Belgique | ||
| 25/05 | Stage 1 | 11 |
| 27/05 | Stage 2 | 24 |
| 29/05 | Stage 3 | 21 |
| 31/05 | Stage 4 | 7 |
| 01/06 | Stage 5 | 9 |
| 01/06 | General Classification | 9 |
Rider information for 1919
| Rank | 140 |
| Score | 95 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 23/05 | Stage 1 | 10 |
| 25/05 | Stage 2 | 4 |
| 27/05 | Stage 3 | 9 |
| 29/05 | Stage 4 | 5 |
| 30/05 | Stage 5 | 6 |
| 30/05 | General Classification | 3 |
| 06/06 | Liège - Bastogne - Liège | 4 |
Rider information for 1920
| Rank | 49 |
| Score | 453 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 24/04 | Paris - Dinant | 9 |
| Tour de Belgique | ||
| 01/05 | Stage 1 | 10 |
| 03/05 | Stage 2 | 8 |
| 05/05 | Stage 3 | 18 |
| 07/05 | Stage 4 | 10 |
| 08/05 | Stage 5 | 10 |
| 08/05 | General Classification | 7 |
| 05/06 | Paris - Bruxelles | 10 |
| Tour de France | ||
| 26/06 | Stage 1 | 12 |
| 28/06 | Stage 2 | 29 |
| 30/06 | Stage 3 | 13 |
| 02/07 | Stage 4 | 13 |
| 04/07 | Stage 5 | 5 |
| 06/07 | Stage 6 | 10 |
| 08/07 | Stage 7 | 9 |
| 10/07 | Stage 8 | 9 |
| 12/07 | Stage 9 | 11 |
| 14/07 | Stage 10 | 7 |
| 16/07 | Stage 11 | 10 |
| 18/07 | Stage 12 | 10 |
| 20/07 | Stage 13 | 13 |
| 22/07 | Stage 14 | 5 |
| 24/07 | Stage 15 | 7 |
| General Classification | 7 |
Rider information for 1921
| Rank | 15 |
| Score | 1246 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | La Sportive |
| Date | Race | Rank |
| Tour de Belgique | ||
| 02/04 | Stage 1 | 20 |
| 04/04 | Stage 2 | 26 |
| 16/04 | Paris - Roubaix | 18 |
| 25/05 | Paris - Bruxelles | 6 |
| Paris - Saint-Etienne | ||
| 03/06 | Stage 1 | 34 |
| 04/06 | Stage 2 | 22 |
| 04/06 | General Classification | 22 |
| Tour de France | ||
| 25/06 | Stage 1 | 9 |
| 27/06 | Stage 2 | 10 |
| 29/06 | Stage 3 | 16 |
| 01/07 | Stage 4 | 11 |
| 03/07 | Stage 5 | 18 |
| 05/07 | Stage 6 | 6 |
| 07/07 | Stage 7 | 8 |
| 09/07 | Stage 8 | 8 |
| 11/07 | Stage 9 | 21 |
| 13/07 | Stage 10 | 11 |
| 15/07 | Stage 11 | 16 |
| 17/07 | Stage 12 | 5 |
| 19/07 | Stage 13 | 10 |
| 21/07 | Stage 14 | 20 |
| 23/07 | Stage 15 | 11 |
| General Classification | 7 | |
| 20/08 | G.P. Sporting | 4 |
| 24/09 | Circuit de Champagne | 3 |
Rider information for 1922
| Rank | 21 |
| Score | 1116 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Peugeot - Wolber |
| Date | Race | Rank |
| 01/04 | Paris - Roubaix | 31 |
| 13/05 | Paris - Tours | 15 |
| Paris - Saint-Etienne | ||
| 20/05 | Stage 1 | 12 |
| 21/05 | General Classification | 27 |
| 21/05 | Stage 2 | 31 |
| Tour de France | ||
| 24/06 | Stage 1 | 19 |
| 26/06 | Stage 2 | 5 |
| 28/06 | Stage 3 | 21 |
| 30/06 | Stage 4 | 22 |
| 02/07 | Stage 5 | 42 |
| 04/07 | Stage 6 | 15 |
| 06/07 | Stage 7 | 9 |
| 08/07 | Stage 8 | 21 |
| 10/07 | Stage 9 | 9 |
| 12/07 | Stage 10 | 7 |
| 14/07 | Stage 11 | 15 |
| 16/07 | Stage 12 | 21 |
| 18/07 | Stage 13 | 23 |
| 20/07 | Stage 14 | 9 |
| 22/07 | Stage 15 | 22 |
| General Classification | 7 | |
| 09/09 | Paris - Angers | 5 |
Rider information for 1923
| Rank | 25 |
| Score | 937 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Peugeot - Wolber |
| Date | Race | Rank |
| 18/03 | Ronde van Vlaanderen | 14 |
| 06/04 | Paris - Roubaix | 7 |
| Tour de Belgique | ||
| 20/04 | Stage 1 | 5 |
| 21/04 | Stage 2 | 22 |
| 24/04 | Stage 3 | 19 |
| 26/04 | Stage 4 | 9 |
| 27/04 | Stage 5 | 11 |
| 27/04 | General Classification | 12 |
| 25/05 | Circuit du Nord de la France | 5 |
| Tour de France | ||
| 22/06 | Stage 1 | 18 |
| 24/06 | Stage 2 | 47 |
| 26/06 | Stage 3 | 83 |
| 03/08 | Paris - Angers | 5 |
| 31/08 | G.P. Sporting | 5 |
| Circuit de Champagne | ||
| 13/09 | Stage 1 | 8 |
| 14/09 | General Classification | 7 |
| 14/09 | Stage 2 | 9 |
Rider information for 1924
| Rank | 71 |
| Score | 467 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Aiglon - Dunlop |
| Date | Race | Rank |
| 12/04 | Paris - Roubaix | 51 |
| Tour de Belgique | ||
| 19/04 | Stage 1 | 26 |
| 21/04 | Stage 2 | 11 |
| 23/04 | Stage 3 | 8 |
| 25/04 | Stage 4 | 5 |
| 26/04 | Stage 5 | 7 |
| 26/04 | General Classification | 8 |
| 24/05 | Circuit du Nord de la France | 17 |
| Tour de France | ||
| 21/06 | Stage 1 | 18 |
| 23/06 | Stage 2 | 12 |
| 25/06 | Stage 3 | 19 |
| 26/06 | Stage 4 | 29 |
| 27/06 | Stage 5 | 49 |
| 28/06 | Stage 6 | 4 |
| 29/06 | Stage 7 | 30 |
| 01/07 | Stage 8 | 15 |
| 03/07 | Stage 9 | 18 |
| 04/07 | Stage 10 | 31 |
| 05/07 | Stage 11 | 18 |
| 07/07 | Stage 12 | 22 |
| 09/07 | Stage 13 | 18 |
| 11/07 | Stage 14 | 24 |
| 13/07 | Stage 15 | 6 |
| 15/07 | Stage 16 | 20 |
| 17/07 | Stage 17 | 19 |
| 19/07 | Stage 18 | 19 |
| General Classification | 16 | |
| 30/07 | Bruxelles - Paris | 17 |
Rider information for 1925
| Rank | 41 |
| Score | 664 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Météore - Wolber |
| Date | Race | Rank |
| 04/04 | Paris - Roubaix | 32 |
| 11/04 | Luxembourg - Lille | 12 |
| 08/05 | Paris - Lille | 25 |
| Tour de Belgique | ||
| 12/05 | Stage 1 | 5 |
| 13/05 | Stage 2 | 14 |
| 15/05 | Stage 3 | 13 |
| 16/05 | Stage 4 | 16 |
| 16/05 | General Classification | 14 |
| 06/06 | Paris - Bruxelles | 17 |
| 25/07 | Paris - Strasbourg | 9 |
Rider information for 1926
| Rank | 173 |
| Score | 138 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| 17/04 | Paris - Roubaix | 28 |
| Tour de France | ||
| 19/06 | Stage 1 | 42 |
| 20/06 | Stage 2 | 44 |
| 21/06 | Stage 3 | 38 |
| 22/06 | Stage 4 | 40 |
| 23/06 | Stage 5 | 34 |
| 24/06 | Stage 6 | 34 |
| 25/06 | Stage 7 | 45 |
| 26/06 | Stage 8 | 23 |
| 27/06 | Stage 9 | 37 |
| 28/06 | Stage 10 | 39 |
| 30/06 | Stage 11 | 26 |
| 02/07 | Stage 12 | 24 |
| 04/07 | Stage 13 | 43 |
| 05/07 | Stage 14 | 24 |
| 06/07 | Stage 15 | 29 |
| 08/07 | Stage 16 | 27 |
| 09/07 | Stage 17 | 23 |
| 11/07 | Stage 18 | 25 |
| 12/07 | Stage 19 | 41 |
| 13/07 | Stage 20 | 32 |
| 14/07 | Stage 21 | 29 |
| 15/07 | Stage 22 | 37 |
| 16/07 | Stage 23 | 29 |
| 17/07 | Stage 24 | 25 |
| General Classification | 28 |
Rider information for 1927
| Rank | 113 |
| Score | 259 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |
| Date | Race | Rank |
| Tour de Belgique | ||
| 09/05 | Stage 1 | 10 |
| 10/05 | Stage 2 | 23 |
| 12/05 | Stage 3 | 19 |
| 13/05 | Stage 4 | 20 |
| 13/05 | General Classification | 16 |
| 27/05 | Paris - Bruxelles | 19 |
Rider information for 1928
| Rank | 316 |
| Score | 72 |
| Name | Léon DESPONTIN |
| Country | Belgium |
| Team | Individual |