| Seaham to Cortona | 997.74 mi (1,605.70 km) |
| Seaham to Cosenza | 1,347.72 mi (2,168.94 km) |
| Seaham to Cossato | 764.85 mi (1,230.90 km) |
| Seaham to Costa Volpino | 799.18 mi (1,286.15 km) |
| Seaham to Creazzo | 854.84 mi (1,375.74 km) |
| Seaham to Crema | 814.71 mi (1,311.16 km) |
| Seaham to Cremona | 837.48 mi (1,347.79 km) |
| Seaham to Crevalcore | 891.55 mi (1,434.81 km) |
| Seaham to Crispiano | 1,300.77 mi (2,093.39 km) |
| Seaham to Crosia | 1,346.66 mi (2,167.24 km) |
| Seaham to Crotone | 1,384.89 mi (2,228.76 km) |
| Seaham to Cuneo | 823.37 mi (1,325.09 km) |
| Seaham to Cuorgne | 763.47 mi (1,228.69 km) |
| Seaham to Cusano Milanino | 791.06 mi (1,273.09 km) |
| Seaham to Cutro | 1,384.03 mi (2,227.38 km) |
