Most grandtour starts by competitors
Number of starts in grand tours before the start of Tour de Suisse 1966.
| Pos. | Rider | Starts | Tour | Giro | Vuelta |
|---|---|---|---|---|---|
| 1 | CARLESI Guido | 13 | 3 | 9 | 1 |
| 2 | MOSER Aldo | 13 | - | 10 | 3 |
| 3 | JUNKERMANN Hans | 12 | 6 | 4 | 2 |
| 4 | BATTISTINI Graziano | 12 | 4 | 8 | - |
| 5 | SARTORE Giuseppe | 10 | 2 | 7 | 1 |
| 6 | MAGNI Oreste | 8 | 1 | 6 | 1 |
| 7 | URRESTARAZU José | 7 | - | - | 7 |
| 8 | BALMAMION Franco | 7 | 1 | 6 | - |
| 9 | TACCONE Vito | 7 | 1 | 6 | - |
| 10 | CRIBIORI Franco | 5 | - | 5 | - |
| 11 | FERRARI Danilo | 5 | 1 | 3 | 1 |
| 12 | OTTAVIANI Angelo | 5 | 1 | 4 | - |
| 13 | RUEGG Alfred | 5 | 1 | 4 | - |
| 14 | CHIAPPANO Carlo | 4 | - | 4 | - |
| 15 | FERRETTI Giancarlo | 4 | - | 4 | - |
| 16 | MARCOLI Raffaele | 4 | - | 4 | - |
| 17 | CARMINATI Lorenzo | 4 | - | 2 | 2 |
| 18 | CLAES Jean-Baptiste | 4 | 3 | 1 | - |
| 19 | ZÖFFEL Roland | 2 | 1 | 1 | - |
| 20 | MAURER Rolf | 2 | - | 2 | - |