All available race results Giovanni De Stefanis
| Date | Race | Rank |
| 29/08 | Giro dell'Appennino | 10 |
Rider information for 1937
| Rank | 913 |
| Score | 5 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Individual |
| Date | Race | Rank |
| 03/09 | World Championships Road Race (Amateurs) | 16 |
| 23/10 | Giro di Lombardia | 25 |
| 13/11 | Genova - Nizza | 11 |
Rider information for 1938
| Rank | 333 |
| Score | 88 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Individual |
| Date | Race | Rank |
| 09/04 | Giro di Toscana | 10 |
| 04/06 | Giro del Piemonte | 15 |
| 16/07 | Giro dell'Appennino | 2 |
| 23/07 | Giro dell'Umbria | 3 |
Rider information for 1939
| Rank | 158 |
| Score | 278 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | C.C. Venaria Reale |
| Date | Race | Rank |
| 19/03 | Milano - Sanremo | 46 |
| 14/04 | Giro di Toscana | 32 |
| Giro d'Italia | ||
| 17/05 | Stage 1 | 7 |
| 18/05 | Stage 2 | 32 |
| 19/05 | Stage 3 | 10 |
| 20/05 | Stage 4 | 58 |
| 21/05 | Stage 5 | 10 |
| 23/05 | Stage 6 | 8 |
| 24/05 | Stage 7 | 4 |
| 25/05 | Stage 8 | 9 |
| 26/05 | Stage 9 | 11 |
| 27/05 | Stage 10 | 8 |
| 29/05 | Stage 11 | 12 |
| 30/05 | Stage 12 | 15 |
| 31/05 | Stage 13 | 17 |
| 01/06 | Stage 14 | 10 |
| 03/06 | Stage 15 | 8 |
| 04/06 | Stage 16 | 9 |
| 05/06 | Stage 17 | 12 |
| 07/06 | Stage 18 | 9 |
| 08/06 | Stage 19 | 11 |
| 09/06 | Stage 20 | 8 |
| 09/06 | General Classification | 8 |
| 27/10 | Giro di Lombardia | 33 |
Rider information for 1940
| Rank | 28 |
| Score | 659 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Gerbi |
| Date | Race | Rank |
| 19/03 | Milano - Sanremo | 16 |
| 20/04 | Giro del Veneto | 5 |
| 22/06 | Giro del Piemonte | 16 |
| 06/07 | Gran Fondo - La Seicento | 18 |
| 10/08 | Giro dell'Emilia | 10 |
| 15/08 | Gorizia - Ljubljana - Trieste - Gorizia | 11 |
| 19/10 | Giro di Lombardia | 11 |
Rider information for 1941
| Rank | 41 |
| Score | 404 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Bianchi |
| Date | Race | Rank |
| 08/03 | Milano - Torino | 7 |
| 19/03 | Milano - Sanremo | 8 |
| 06/04 | Giro del Lazio | 9 |
| 03/05 | Giro di Toscana | 20 |
| 31/05 | Giro dell'Emilia | 17 |
| 25/07 | Giro del Veneto | 10 |
| 30/08 | Tre Valli Varesine | 7 |
| 06/09 | Giro del Piemonte | 11 |
Rider information for 1942
| Rank | 51 |
| Score | 435 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Bianchi |
| Date | Race | Rank |
| 19/03 | Milano - Sanremo | 17 |
| 18/04 | Giro del Lazio | 11 |
| 25/04 | Giro di Toscana | 7 |
Rider information for 1943
| Rank | 63 |
| Score | 251 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Bianchi |
| Date | Race | Rank |
| 27/08 | Trofeo Baracchi | 6 |
Rider information for 1944
| Rank | 221 |
| Score | 30 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Benotto |
| Date | Race | Rank |
| Giro del Piemonte | ||
| 02/09 | General Classification | 7 |
| 09/09 | Coppa Bernocchi | 9 |
| 21/10 | Giro di Lombardia | 13 |
Rider information for 1945
| Rank | 148 |
| Score | 138 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Bianchi |
| Date | Race | Rank |
| 19/03 | Milano - Sanremo | 30 |
| 31/03 | Milano - Torino | 18 |
| 12/05 | Giro di Romagna | 3 |
| Giro d'Italia | ||
| 15/06 | Stage 1 | 24 |
| 16/06 | Stage 2 | 58 |
| 17/06 | Stage 3 | 28 |
| 19/06 | Stage 4a | 11 |
| 19/06 | Stage 4b | 10 |
| 20/06 | Stage 5a | 34 |
| 20/06 | Stage 5b | 9 |
| 22/06 | Stage 6 | 22 |
| 24/06 | Stage 7 | 18 |
| 25/06 | Stage 8 | 16 |
| 26/06 | Stage 9 | 12 |
| 27/06 | Stage 10 | 11 |
| 29/06 | Stage 11 | 14 |
| 02/07 | Stage 13 | 13 |
| 03/07 | Stage 14 | 20 |
| 05/07 | Stage 15 | 40 |
| 06/07 | Stage 16a | 6 |
| 06/07 | Stage 16b | 9 |
| 07/07 | Stage 17 | 11 |
| 07/07 | General Classification | 21 |
Rider information for 1946
| Rank | 117 |
| Score | 316 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Bianchi |
| Date | Race | Rank |
| 13/04 | Giro del Lazio | 32 |
| 27/04 | Giro del Piemonte | 19 |
| 27/07 | Trofeo Baracchi | 9 |
| 12/08 | Tre Valli Varesine | 22 |
| 31/08 | Giro del Veneto | 15 |
| 04/10 | Giro dell'Emilia | 21 |
| 26/10 | Giro di Lombardia | 44 |
| Giro d'Italia | ||
| General Classification | 13 |
Rider information for 1947
| Rank | 115 |
| Score | 409 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Viscontea |
| Date | Race | Rank |
| 12/06 | Giro del Veneto | 16 |
| 08/08 | Tre Valli Varesine | 17 |
Rider information for 1948
| Rank | 1047 |
| Score | 6 |
| Name | Giovanni DE STEFANIS |
| Country | Italy |
| Team | Viscontea |