| Clay to Chojnice | 4,901.21 mi (7,887.74 km) |
| Clay to Chojnow | 4,930.12 mi (7,934.26 km) |
| Clay to Chorzow | 5,077.23 mi (8,171.00 km) |
| Clay to Choszczno | 4,844.57 mi (7,796.58 km) |
| Clay to Chrzanow | 5,100.17 mi (8,207.94 km) |
| Clay to Ciechanow | 5,039.52 mi (8,110.32 km) |
| Clay to Ciechocinek | 4,974.29 mi (8,005.35 km) |
| Clay to Cieszyn | 5,086.30 mi (8,185.61 km) |
| Clay to Czarna Bialostocka | 5,112.97 mi (8,228.53 km) |
| Clay to Czarnkow | 4,895.09 mi (7,877.89 km) |
| Clay to Czechowice-Dziedzice | 5,094.01 mi (8,198.01 km) |
| Clay to Czeladz | 5,080.88 mi (8,176.88 km) |
| Clay to Czersk Pomorski | 4,912.62 mi (7,906.10 km) |
| Clay to Czestochowa | 5,064.39 mi (8,150.35 km) |
| Clay to Czluchow | 4,896.00 mi (7,879.36 km) |
