All races
All races where Siewierz was either departure or arrival city, or a location on the route.
| # | Date | Race |
|---|---|---|
| 1 | 2026-05-10 | Kryterium Asów Zagłębie Classic |
| 2 | 1959-05-13 | Course de la Paix | Stage 12a (ITT) |
| # | Date | Race |
|---|---|---|
| 1 | 2026-05-10 | Kryterium Asów Zagłębie Classic |
| 2 | 1959-05-13 | Course de la Paix | Stage 12a (ITT) |