| Seaham to Collegno | 780.86 mi (1,256.67 km) |
| Seaham to Cologno al Serio | 802.59 mi (1,291.64 km) |
| Seaham to Cologno Monzese | 794.75 mi (1,279.03 km) |
| Seaham to Colorno | 858.36 mi (1,381.39 km) |
| Seaham to Comacchio | 921.46 mi (1,482.95 km) |
| Seaham to Comiso | 1,446.84 mi (2,328.46 km) |
| Seaham to Como | 773.34 mi (1,244.58 km) |
| Seaham to Concordia Sagittaria | 882.94 mi (1,420.96 km) |
| Seaham to Concorezzo | 792.67 mi (1,275.69 km) |
| Seaham to Conegliano | 859.65 mi (1,383.48 km) |
| Seaham to Conselice | 921.89 mi (1,483.65 km) |
| Seaham to Conselve | 882.58 mi (1,420.37 km) |
| Seaham to Conversano | 1,276.50 mi (2,054.32 km) |
| Seaham to Copertino | 1,344.21 mi (2,163.29 km) |
| Seaham to Copparo | 900.23 mi (1,448.79 km) |
