| Sieradz to Cividale del Friuli | 450.11 mi (724.38 km) |
| Sieradz to Civita Castellana | 708.34 mi (1,139.96 km) |
| Sieradz to Civitanova Marche | 619.16 mi (996.44 km) |
| Sieradz to Civitavecchia | 733.17 mi (1,179.92 km) |
| Sieradz to Civitella in Val di Chiana | 653.09 mi (1,051.05 km) |
| Sieradz to Clusone | 562.10 mi (904.61 km) |
| Sieradz to Coccaglio | 577.78 mi (929.84 km) |
| Sieradz to Codigoro | 557.92 mi (897.88 km) |
| Sieradz to Codogno | 607.63 mi (977.88 km) |
| Sieradz to Codroipo | 469.51 mi (755.61 km) |
| Sieradz to Cogoleto | 681.76 mi (1,097.18 km) |
| Sieradz to Colle di Val d'Elsa | 668.07 mi (1,075.15 km) |
| Sieradz to Colle Salvetti | 672.77 mi (1,082.71 km) |
| Sieradz to Collecchio | 614.46 mi (988.87 km) |
| Sieradz to Colleferro | 733.36 mi (1,180.22 km) |
