| Seaham to Chojnice | 763.88 mi (1,229.35 km) |
| Seaham to Chojnow | 756.32 mi (1,217.18 km) |
| Seaham to Chorzow | 904.05 mi (1,454.92 km) |
| Seaham to Choszczno | 688.49 mi (1,108.02 km) |
| Seaham to Chrzanow | 927.02 mi (1,491.90 km) |
| Seaham to Ciechanow | 902.00 mi (1,451.63 km) |
| Seaham to Ciechocinek | 828.05 mi (1,332.62 km) |
| Seaham to Cieszyn | 910.33 mi (1,465.04 km) |
| Seaham to Czarna Bialostocka | 998.74 mi (1,607.32 km) |
| Seaham to Czarnkow | 739.57 mi (1,190.23 km) |
| Seaham to Czechowice-Dziedzice | 919.12 mi (1,479.18 km) |
| Seaham to Czeladz | 908.16 mi (1,461.54 km) |
| Seaham to Czersk Pomorski | 779.26 mi (1,254.09 km) |
| Seaham to Czestochowa | 894.82 mi (1,440.08 km) |
| Seaham to Czluchow | 757.13 mi (1,218.49 km) |
