All available race results Ismael Dumoulin
| Date | Race | Rank |
| Tour du Sud-Ouest | ||
| 31/08 | Stage 2 | 7 |
| 03/09 | Stage 4 | 6 |
| 05/09 | Stage 5 | 10 |
| 08/09 | Stage 7 | 10 |
| 09/09 | General Classification | 12 |
Rider information for 1923
| Rank | 540 |
| Score | 18 |
| Name | Ismael DUMOULIN |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| Bordeaux - Marseille | ||
| 17/04 | Stage 1 | 8 |
| Tour du Sud-Ouest | ||
| 07/06 | Stage 8 | 7 |
| 09/06 | Stage 9 | 7 |
| 09/06 | General Classification | 13 |
Rider information for 1924
| Rank | 618 |
| Score | 16 |
| Name | Ismael DUMOULIN |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| Tour du Sud-Ouest | ||
| 21/05 | Stage 2 | 7 |
| 01/06 | Stage 9 | 5 |
| 01/06 | General Classification | 17 |
Rider information for 1925
| Rank | 757 |
| Score | 10 |
| Name | Ismael DUMOULIN |
| Country | France |
| Team | Individual |
| Date | Race | Rank |
| Tour du Sud-Ouest | ||
| 13/05 | Stage 2 | 9 |
| 21/05 | Stage 7 | 3 |
| 24/05 | General Classification | 6 |
| Circuit du Midi | ||
| 14/07 | General Classification | 21 |
Rider information for 1926
| Rank | 445 |
| Score | 36 |
| Name | Ismael DUMOULIN |
| Country | France |
| Team | Individual |
No results available in season 1929.
Rider information for 1929
| Rank | 613 |
| Score | 20 |
| Name | Ismael DUMOULIN |
| Country | France |
| Team | Individual |