| Sieradz to Collegno | 681.77 mi (1,097.20 km) |
| Sieradz to Cologno al Serio | 585.58 mi (942.40 km) |
| Sieradz to Cologno Monzese | 602.04 mi (968.88 km) |
| Sieradz to Colorno | 599.42 mi (964.68 km) |
| Sieradz to Comacchio | 564.21 mi (908.01 km) |
| Sieradz to Comiso | 1,032.39 mi (1,661.48 km) |
| Sieradz to Como | 594.24 mi (956.34 km) |
| Sieradz to Concordia Sagittaria | 484.29 mi (779.39 km) |
| Sieradz to Concorezzo | 597.04 mi (960.85 km) |
| Sieradz to Conegliano | 491.79 mi (791.45 km) |
| Sieradz to Conselice | 583.84 mi (939.59 km) |
| Sieradz to Conselve | 540.91 mi (870.51 km) |
| Sieradz to Conversano | 738.77 mi (1,188.93 km) |
| Sieradz to Copertino | 783.77 mi (1,261.35 km) |
| Sieradz to Copparo | 561.20 mi (903.17 km) |
