| Birsfelden to Chojnice | 606.96 mi (976.81 km) |
| Birsfelden to Chojnow | 452.77 mi (728.66 km) |
| Birsfelden to Chorzow | 547.42 mi (880.98 km) |
| Birsfelden to Choszczno | 517.51 mi (832.86 km) |
| Birsfelden to Chrzanow | 563.68 mi (907.15 km) |
| Birsfelden to Ciechanow | 680.89 mi (1,095.79 km) |
| Birsfelden to Ciechocinek | 614.54 mi (989.01 km) |
| Birsfelden to Cieszyn | 524.41 mi (843.96 km) |
| Birsfelden to Czarna Bialostocka | 793.03 mi (1,276.25 km) |
| Birsfelden to Czarnkow | 540.33 mi (869.58 km) |
| Birsfelden to Czechowice-Dziedzice | 543.13 mi (874.09 km) |
| Birsfelden to Czeladz | 553.70 mi (891.10 km) |
| Birsfelden to Czersk Pomorski | 624.36 mi (1,004.81 km) |
| Birsfelden to Czestochowa | 564.75 mi (908.88 km) |
| Birsfelden to Czluchow | 599.77 mi (965.23 km) |
