| Willimantic to Chojnice | 3,968.88 mi (6,387.30 km) |
| Willimantic to Chojnow | 3,987.31 mi (6,416.95 km) |
| Willimantic to Chorzow | 4,134.92 mi (6,654.50 km) |
| Willimantic to Choszczno | 3,907.57 mi (6,288.62 km) |
| Willimantic to Chrzanow | 4,157.90 mi (6,691.50 km) |
| Willimantic to Ciechanow | 4,108.20 mi (6,611.51 km) |
| Willimantic to Ciechocinek | 4,040.47 mi (6,502.51 km) |
| Willimantic to Cieszyn | 4,142.01 mi (6,665.92 km) |
| Willimantic to Czarna Bialostocka | 4,187.39 mi (6,738.96 km) |
| Willimantic to Czarnkow | 3,958.50 mi (6,370.59 km) |
| Willimantic to Czechowice-Dziedzice | 4,150.62 mi (6,679.77 km) |
| Willimantic to Czeladz | 4,138.83 mi (6,660.80 km) |
| Willimantic to Czersk Pomorski | 3,981.22 mi (6,407.15 km) |
| Willimantic to Czestochowa | 4,123.83 mi (6,636.66 km) |
| Willimantic to Czluchow | 3,963.30 mi (6,378.32 km) |
