| Portsmouth to Chojnice | 810.67 mi (1,304.65 km) |
| Portsmouth to Chojnow | 738.53 mi (1,188.55 km) |
| Portsmouth to Chorzow | 877.62 mi (1,412.39 km) |
| Portsmouth to Choszczno | 719.20 mi (1,157.44 km) |
| Portsmouth to Chrzanow | 899.27 mi (1,447.24 km) |
| Portsmouth to Ciechanow | 934.50 mi (1,503.93 km) |
| Portsmouth to Ciechocinek | 857.38 mi (1,379.81 km) |
| Portsmouth to Cieszyn | 871.20 mi (1,402.06 km) |
| Portsmouth to Czarna Bialostocka | 1,044.40 mi (1,680.80 km) |
| Portsmouth to Czarnkow | 765.14 mi (1,231.37 km) |
| Portsmouth to Czechowice-Dziedzice | 885.11 mi (1,424.45 km) |
| Portsmouth to Czeladz | 883.01 mi (1,421.07 km) |
| Portsmouth to Czersk Pomorski | 828.62 mi (1,333.54 km) |
| Portsmouth to Czestochowa | 879.47 mi (1,415.38 km) |
| Portsmouth to Czluchow | 802.95 mi (1,292.23 km) |
