| Sieradz to Castrovillari | 823.26 mi (1,324.90 km) |
| Sieradz to Catania | 990.41 mi (1,593.92 km) |
| Sieradz to Catanzaro | 883.59 mi (1,422.00 km) |
| Sieradz to Cattolica | 596.33 mi (959.70 km) |
| Sieradz to Cava de' Tirreni | 777.35 mi (1,251.03 km) |
| Sieradz to Cavallino | 780.04 mi (1,255.36 km) |
| Sieradz to Cavarzere | 540.89 mi (870.47 km) |
| Sieradz to Cave | 729.40 mi (1,173.86 km) |
| Sieradz to Cavriago | 608.11 mi (978.65 km) |
| Sieradz to Cavriglia | 652.51 mi (1,050.11 km) |
| Sieradz to Cazzago San Martino | 575.32 mi (925.88 km) |
| Sieradz to Ceccano | 738.90 mi (1,189.15 km) |
| Sieradz to Cecina | 688.60 mi (1,108.20 km) |
| Sieradz to Cefalu | 965.12 mi (1,553.22 km) |
| Sieradz to Ceglie Messapico | 758.91 mi (1,221.34 km) |
