| Seaham to Carmona | 1,217.27 mi (1,959.00 km) |
| Seaham to Cartagena | 1,191.29 mi (1,917.19 km) |
| Seaham to Cartama | 1,262.21 mi (2,031.34 km) |
| Seaham to Cartaya | 1,243.57 mi (2,001.33 km) |
| Seaham to Caspe | 942.03 mi (1,516.04 km) |
| Seaham to Cassa de la Selva | 915.06 mi (1,472.64 km) |
| Seaham to Castalla | 1,122.74 mi (1,806.87 km) |
| Seaham to Castellbisbal | 935.65 mi (1,505.79 km) |
| Seaham to Castelldefels | 949.07 mi (1,527.38 km) |
| Seaham to Castello de Ampurias | 892.01 mi (1,435.55 km) |
| Seaham to Castellon de la Plana | 1,028.28 mi (1,654.86 km) |
| Seaham to Castilleja de la Cuesta | 1,226.37 mi (1,973.65 km) |
| Seaham to Catarroja | 1,067.49 mi (1,717.96 km) |
| Seaham to Catral | 1,152.79 mi (1,855.24 km) |
| Seaham to Caudete | 1,114.98 mi (1,794.39 km) |
