Most grandtour starts by competitors
Number of starts in grand tours before the start of Critérium du Dauphiné Libéré 1966.
| Pos. | Rider | Starts | Tour | Giro | Vuelta |
|---|---|---|---|---|---|
| 1 | MAZZACURATI Italo | 10 | 3 | 7 | - |
| 2 | CASATI Vittorio | 9 | 1 | 7 | 1 |
| 3 | GÓMEZ Antonio | 9 | 2 | 1 | 6 |
| 4 | GABICA Francisco | 9 | 3 | - | 6 |
| 5 | ZILVERBERG Huub | 8 | 3 | 3 | 2 |
| 6 | GAINCHE Jean | 8 | 8 | - | - |
| 7 | FOUCHER André | 7 | 6 | 1 | - |
| 8 | URIONA Valentin | 7 | 3 | - | 4 |
| 9 | ECHEVERRÍA Carlos | 7 | 3 | - | 4 |
| 10 | MASTROTTO Raymond | 6 | 6 | - | - |
| 11 | VAN SCHIL Victor | 6 | 4 | - | 2 |
| 12 | POULIDOR Raymond | 6 | 4 | - | 2 |
| 13 | GROUSSARD Georges | 5 | 5 | - | - |
| 14 | MOMEÑE José Antonio | 5 | 2 | - | 3 |
| 15 | NIJDAM Henk | 4 | 2 | 1 | 1 |
| 16 | BRACKE Ferdinand | 3 | 3 | - | - |
| 17 | HOBAN Barry | 3 | 1 | - | 2 |
| 18 | GRAIN Michel | 3 | 1 | 1 | 1 |
| 19 | KUNDE Karl-Heinz | 3 | 2 | - | 1 |
| 20 | GALERA Joaquín | 3 | 2 | - | 1 |