| Seaham to Cognac | 633.36 mi (1,019.29 km) |
| Seaham to Cogolin | 875.07 mi (1,408.28 km) |
| Seaham to Colmar | 597.56 mi (961.68 km) |
| Seaham to Colombes | 436.41 mi (702.33 km) |
| Seaham to Colomiers | 784.84 mi (1,263.09 km) |
| Seaham to Combs-la-Ville | 457.60 mi (736.43 km) |
| Seaham to Comines | 335.13 mi (539.35 km) |
| Seaham to Compiegne | 414.17 mi (666.55 km) |
| Seaham to Concarneau | 493.82 mi (794.73 km) |
| Seaham to Conde-sur-l'Escaut | 366.90 mi (590.47 km) |
| Seaham to Conflans-Sainte-Honorine | 429.20 mi (690.74 km) |
| Seaham to Corbas | 690.45 mi (1,111.17 km) |
| Seaham to Corbeil-Essonnes | 460.06 mi (740.39 km) |
| Seaham to Cormeilles-en-Parisis | 432.37 mi (695.83 km) |
| Seaham to Cosne sur Loire | 545.39 mi (877.72 km) |
