| Sumner to Chojnice | 5,076.48 mi (8,169.81 km) |
| Sumner to Chojnow | 5,194.00 mi (8,358.94 km) |
| Sumner to Chorzow | 5,313.22 mi (8,550.80 km) |
| Sumner to Choszczno | 5,068.00 mi (8,156.15 km) |
| Sumner to Chrzanow | 5,332.24 mi (8,581.42 km) |
| Sumner to Ciechanow | 5,184.31 mi (8,343.34 km) |
| Sumner to Ciechocinek | 5,149.80 mi (8,287.81 km) |
| Sumner to Cieszyn | 5,341.22 mi (8,595.86 km) |
| Sumner to Czarna Bialostocka | 5,202.23 mi (8,372.18 km) |
| Sumner to Czarnkow | 5,106.78 mi (8,218.57 km) |
| Sumner to Czechowice-Dziedzice | 5,338.36 mi (8,591.27 km) |
| Sumner to Czeladz | 5,313.72 mi (8,551.60 km) |
| Sumner to Czersk Pomorski | 5,078.66 mi (8,173.32 km) |
| Sumner to Czestochowa | 5,285.34 mi (8,505.93 km) |
| Sumner to Czluchow | 5,075.09 mi (8,167.57 km) |
