Info
| Last name | Girardengo |
| First name | Constante |
| Nationality |  Italy |
| Date of birth | 18-03-1893 |
| Place of birth | Novi Ligure |
| Passed away | 09-02-1978 |
| Age when passed away | 84 |
| Place of passing | Cassano Spinola |
Monuments
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
| 02-11 | 1 | Giro di Lombardia (CDM) | |||||
| 12-10 | 1 | National Road Championships - Italy (CN) | |||||
| Giro d'Italia (2.HC) | |||||||
| 1 |  Standings | ||||||
| 08-06 | 1 | Stage 10Torino - Milano (277.0km) | |||||
| 06-06 | 1 | Stage 9Genova - Torino (248.0km) | |||||
| 04-06 | 1 | Stage 8Firenze - Genova (261.0km) | |||||
| 02-06 | 1 | Stage 7Roma - Firenze (350.0km) | |||||
| 31-05 | 1 | Stage 6Napoli - Roma (203.0km) | |||||
| 29-05 | 2 | Stage 5Pescara - Napoli (312.0km) | |||||
| 27-05 | Stage 4Ferrara - Pescara (411.0km) | ||||||
| 25-05 | 2 | Stage 3Trieste - Ferrara (282.0km) | |||||
| 23-05 | 1 | Stage 2Trento - Trieste (334.0km) | |||||
| 21-05 | 1 | Stage 1Milano - Trento (302.0km) | |||||
| 04-05 | 1 | Giro del Piemonte (1.2) | |||||
| 13-04 | 1 | Milano - Torino (1.1) | |||||
| 06-04 | 2 | Milano-Sanremo (CDM) | |||||