| Olney to Chojnice | 4,273.37 mi (6,877.32 km) |
| Olney to Chojnow | 4,294.75 mi (6,911.73 km) |
| Olney to Chorzow | 4,442.26 mi (7,149.13 km) |
| Olney to Choszczno | 4,213.37 mi (6,780.76 km) |
| Olney to Chrzanow | 4,465.24 mi (7,186.11 km) |
| Olney to Ciechanow | 4,412.45 mi (7,101.16 km) |
| Olney to Ciechocinek | 4,345.41 mi (6,993.27 km) |
| Olney to Cieszyn | 4,449.89 mi (7,161.40 km) |
| Olney to Czarna Bialostocka | 4,490.02 mi (7,225.98 km) |
| Olney to Czarnkow | 4,264.20 mi (6,862.57 km) |
| Olney to Czechowice-Dziedzice | 4,458.26 mi (7,174.87 km) |
| Olney to Czeladz | 4,446.10 mi (7,155.31 km) |
| Olney to Czersk Pomorski | 4,285.44 mi (6,896.75 km) |
| Olney to Czestochowa | 4,430.69 mi (7,130.51 km) |
| Olney to Czluchow | 4,267.89 mi (6,868.51 km) |
