Info
| Last name | Demidenko |
| First name | Viktor |
| Nationality |  Russian Federation |
| Place of birth | Omsk |
Grand tours
| Year | Giro d'Italia | Tour de France | Vuelta a España |
|---|---|---|---|
| 1986 | - | - | 39th |
| Date | Rank | Race | |||||
|---|---|---|---|---|---|---|---|
 Vuelta a España (2.HC) | |||||||
| 39 |  Standings | ||||||
| 13-05 | Stage 21Jerez de la Frontera - Jerez de la Frontera (22.0km) | ||||||
| 12-05 | 9 | Stage 20Puerto Real - Jerez de la Frontera (239.0km) | |||||
| 10-05 | 1 | Stage 18Granada - Benalmádena (191.0km) | |||||
| 07-05 | 9 | Stage 15Aranjuez - Albacete (207.0km) | |||||
| 06-05 | 8 | Stage 14Villalba - Leganés (165.0km) | |||||
| 29-04 | 8 | Stage 7Cangas de Onís - Oviedo (180.0km) | |||||