| Seclin to Chojnow | 563.66 mi (907.12 km) |
| Seclin to Chorzow | 699.68 mi (1,126.02 km) |
| Seclin to Choszczno | 557.85 mi (897.77 km) |
| Seclin to Chrzanow | 720.99 mi (1,160.32 km) |
| Seclin to Ciechanow | 768.47 mi (1,236.73 km) |
| Seclin to Ciechocinek | 691.88 mi (1,113.47 km) |
| Seclin to Cieszyn | 691.76 mi (1,113.29 km) |
| Seclin to Czarna Bialostocka | 880.51 mi (1,417.04 km) |
| Seclin to Czarnkow | 600.72 mi (966.76 km) |
| Seclin to Czechowice-Dziedzice | 706.16 mi (1,136.45 km) |
| Seclin to Czeladz | 705.21 mi (1,134.93 km) |
| Seclin to Czersk Pomorski | 670.26 mi (1,078.67 km) |
| Seclin to Czestochowa | 703.23 mi (1,131.74 km) |
| Seclin to Czluchow | 644.08 mi (1,036.55 km) |
| Seclin to Dabrowa Gornicza | 709.86 mi (1,142.41 km) |
