| Williamstown to Chojnice | 4,170.40 mi (6,711.60 km) |
| Williamstown to Chojnow | 4,188.95 mi (6,741.46 km) |
| Williamstown to Chorzow | 4,336.56 mi (6,979.02 km) |
| Williamstown to Choszczno | 4,109.20 mi (6,613.12 km) |
| Williamstown to Chrzanow | 4,359.55 mi (7,016.02 km) |
| Williamstown to Ciechanow | 4,309.69 mi (6,935.77 km) |
| Williamstown to Ciechocinek | 4,242.04 mi (6,826.90 km) |
| Williamstown to Cieszyn | 4,343.61 mi (6,990.36 km) |
| Williamstown to Czarna Bialostocka | 4,388.62 mi (7,062.81 km) |
| Williamstown to Czarnkow | 4,160.13 mi (6,695.08 km) |
| Williamstown to Czechowice-Dziedzice | 4,352.24 mi (7,004.26 km) |
| Williamstown to Czeladz | 4,340.48 mi (6,985.32 km) |
| Williamstown to Czersk Pomorski | 4,182.70 mi (6,731.40 km) |
| Williamstown to Czestochowa | 4,325.49 mi (6,961.20 km) |
| Williamstown to Czluchow | 4,164.83 mi (6,702.65 km) |
