All available race results Leon Lannoy
| Date | Race | Rank |
| Paris - Calais | ||
| 06/06 | Stage C4 | 4 |
| 20/06 | Paris - Bruxelles | 15 |
| Tour de France | ||
| 05/07 | Stage 1 | 11 |
| 07/07 | Stage 2 | 18 |
| 09/07 | Stage 3 | 49 |
| 15/08 | Paris - Honfleur | 3 |
| 22/08 | Reims - Charleroi | 17 |
| 26/09 | Paris - Tours | 13 |
Rider information for 1909
| Rank | 72 |
| Score | 264 |
| Name | Leon LANNOY |
| Country | France |
| Team | Le Globe |
| Date | Race | Rank |
| 27/03 | Paris - Roubaix | 40 |
| 01/05 | Paris - Bruxelles | 16 |
| 05/06 | Paris - Calais | 1 |
| Tour de France | ||
| 03/07 | Stage 1 | 37 |
| 05/07 | Stage 2 | 42 |
| 07/07 | Stage 3 | 28 |
| 09/07 | Stage 4 | 22 |
| 11/07 | Stage 5 | 20 |
| 13/07 | Stage 6 | 27 |
| 15/07 | Stage 7 | 20 |
| 17/07 | Stage 8 | 28 |
| 19/07 | Stage 9 | 25 |
| 21/07 | Stage 10 | 27 |
| 23/07 | Stage 11 | 23 |
| 25/07 | Stage 12 | 13 |
| 27/07 | Stage 13 | 23 |
Rider information for 1910
| Rank | 69 |
| Score | 249 |
| Name | Leon LANNOY |
| Country | France |
| Team | Le Globe - Dunlop |
| Date | Race | Rank |
| 02/04 | Paris - Tours | 29 |
| 25/06 | G.P. de la Chambre Syndicale du Cycle et de l'Automobile | 20 |
Rider information for 1911
| Rank | 309 |
| Score | 43 |
| Name | Leon LANNOY |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| 24/03 | Paris - Tours | 25 |
| 07/04 | Paris - Roubaix | 46 |
Rider information for 1912
| Rank | 268 |
| Score | 55 |
| Name | Leon LANNOY |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| 23/03 | Paris - Roubaix | 84 |
| 06/04 | Paris - Tours | 55 |
Rider information for 1913
| Rank | 489 |
| Score | 12 |
| Name | Leon LANNOY |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| 12/07 | Paris - Calais | 7 |
Rider information for 1914
| Rank | 384 |
| Score | 11 |
| Name | Leon LANNOY |
| Country | France |
| Team | Individual |