| Sieradz to Cartagena | 1,361.98 mi (2,191.89 km) |
| Sieradz to Cartama | 1,537.33 mi (2,474.09 km) |
| Sieradz to Cartaya | 1,601.27 mi (2,577.00 km) |
| Sieradz to Caspe | 1,140.33 mi (1,835.19 km) |
| Sieradz to Cassa de la Selva | 1,003.64 mi (1,615.20 km) |
| Sieradz to Castalla | 1,297.90 mi (2,088.76 km) |
| Sieradz to Castellbisbal | 1,055.82 mi (1,699.17 km) |
| Sieradz to Castelldefels | 1,066.01 mi (1,715.59 km) |
| Sieradz to Castello de Ampurias | 977.99 mi (1,573.91 km) |
| Sieradz to Castellon de la Plana | 1,203.17 mi (1,936.31 km) |
| Sieradz to Castilleja de la Cuesta | 1,554.84 mi (2,502.27 km) |
| Sieradz to Catarroja | 1,246.27 mi (2,005.67 km) |
| Sieradz to Catral | 1,325.82 mi (2,133.70 km) |
| Sieradz to Caudete | 1,303.26 mi (2,097.39 km) |
| Sieradz to Cehegin | 1,363.90 mi (2,194.99 km) |
