Info
| Last name | Wirz |
| First name | Guido |
| Nationality |  Switzerland |
| Date of birth | 28-10-1972 |
| Age | 53 |
| Place of birth | Roggliswil |
Grand tours
| Year | Giro d'Italia | Tour de France | Vuelta a España |
|---|---|---|---|
| 1998 | - | - | DNF |
| Date | Rank | Race |
|---|---|---|
| 24-04 | DNF |  Amstel Gold Race (CDM) |
Teams
| Year | Team |
|---|---|
| 1999 | Post Swiss Team |
| 1998 | Post Swiss Team |
| 1997 | Post Swiss Team |
| 1996 | PMU Romand - BEPSA - Loup Sport |
Victories
| This year | 0 |
| Total | 0 |