| Seaham to Cocentaina | 1,112.85 mi (1,790.95 km) |
| Seaham to Coin | 1,265.99 mi (2,037.42 km) |
| Seaham to Colindres | 796.29 mi (1,281.50 km) |
| Seaham to Collado-Villalba | 989.20 mi (1,591.97 km) |
| Seaham to Colmenar Viejo | 986.12 mi (1,587.01 km) |
| Seaham to Colmenarejo | 994.23 mi (1,600.06 km) |
| Seaham to Conil de la Frontera | 1,302.91 mi (2,096.83 km) |
| Seaham to Consuegra | 1,067.70 mi (1,718.30 km) |
| Seaham to Corbera de Llobregat | 939.37 mi (1,511.77 km) |
| Seaham to Cordoba | 1,182.57 mi (1,903.17 km) |
| Seaham to Coria del Rio | 1,233.19 mi (1,984.63 km) |
| Seaham to Crevillente | 1,146.62 mi (1,845.31 km) |
| Seaham to Cuarte de Huerva | 916.15 mi (1,474.40 km) |
| Seaham to Cubellas | 951.75 mi (1,531.70 km) |
| Seaham to Cuellar | 938.41 mi (1,510.22 km) |
