All races
All races where Widnau was either departure or arrival city, or a location on the route.
| # | Date | Race |
|---|---|---|
| 1 | 2001-06-23 | Tour de Suisse | Stage 4 |
| 2 | 1980-06-12 | Tour de Suisse | Stage 2 |
| 3 | 1980-06-11 | Tour de Suisse | Stage 1 |
| 4 | 1977-06-17 | Tour de Suisse | Stage 2 |
| 5 | 1977-06-16 | Tour de Suisse | Stage 1 |