| Sieradz to Coin | 1,543.98 mi (2,484.80 km) |
| Sieradz to Colindres | 1,174.44 mi (1,890.07 km) |
| Sieradz to Collado-Villalba | 1,318.60 mi (2,122.08 km) |
| Sieradz to Colmenar Viejo | 1,308.07 mi (2,105.13 km) |
| Sieradz to Colmenarejo | 1,322.33 mi (2,128.09 km) |
| Sieradz to Conil de la Frontera | 1,613.38 mi (2,596.49 km) |
| Sieradz to Consuegra | 1,359.64 mi (2,188.13 km) |
| Sieradz to Corbera de Llobregat | 1,060.64 mi (1,706.93 km) |
| Sieradz to Cordoba | 1,482.20 mi (2,385.37 km) |
| Sieradz to Coria del Rio | 1,559.90 mi (2,510.42 km) |
| Sieradz to Crevillente | 1,321.19 mi (2,126.24 km) |
| Sieradz to Cuarte de Huerva | 1,156.17 mi (1,860.68 km) |
| Sieradz to Cubellas | 1,080.22 mi (1,738.44 km) |
| Sieradz to Cuellar | 1,295.16 mi (2,084.36 km) |
| Sieradz to Cuenca | 1,275.62 mi (2,052.92 km) |
