Info
| Last name | De Block |
| First name | Marc |
| Nationality |  Belgium |
| Date of birth | 25-07-1945 |
| Age | 80 |
| Place of birth | Schelderode |
Grand tours
| Year | Giro d'Italia | Tour de France | Vuelta a España |
|---|---|---|---|
| 1969 | - | 82nd | - |
| Date | Rank | Race |
|---|---|---|
| 25-12 | 2 | GP van het Zoniënwoud Cyclocross (C2) |
| 12-11 | 2 | Cyclocross Adegem (C2) |
| 12-02 | 3 | Cyclocross Heusden (C2) |
| 22-01 | 5 |  World Championship Cyclocross (CM) |
| 15-01 | 2 | Cyclocross Munte (C2) |
Teams
| Year | Team |
|---|---|
| 1978 | Hertekamp |
| 1977 | Hertekamp |
| 1976 | Hertekamp |
| 1975 | Hertekamp |
| 1974 | Hertekamp |
| 1973 | Hertekamp |
| 1972 | Hertekamp |
| 1971 | Hertekamp - Magniflex |
| 1970 | Hertekamp - Magniflex |
| 1969 | Flandria - De Clercq - Kruger |
| 1968 | Flandria - De Clercq - Kruger(from 29-05) |
Victories
| This year | 0 |
| Total | 25 |