| Welwyn Garden City to Chojnice | 751.39 mi (1,209.24 km) |
| Welwyn Garden City to Chojnow | 692.65 mi (1,114.72 km) |
| Welwyn Garden City to Chorzow | 835.45 mi (1,344.53 km) |
| Welwyn Garden City to Choszczno | 662.11 mi (1,065.56 km) |
| Welwyn Garden City to Chrzanow | 857.64 mi (1,380.24 km) |
| Welwyn Garden City to Ciechanow | 879.18 mi (1,414.91 km) |
| Welwyn Garden City to Ciechocinek | 802.08 mi (1,290.82 km) |
| Welwyn Garden City to Cieszyn | 832.26 mi (1,339.40 km) |
| Welwyn Garden City to Czarna Bialostocka | 987.13 mi (1,588.63 km) |
| Welwyn Garden City to Czarnkow | 709.68 mi (1,142.12 km) |
| Welwyn Garden City to Czechowice-Dziedzice | 844.97 mi (1,359.84 km) |
| Welwyn Garden City to Czeladz | 840.57 mi (1,352.77 km) |
| Welwyn Garden City to Czersk Pomorski | 769.01 mi (1,237.60 km) |
| Welwyn Garden City to Czestochowa | 834.56 mi (1,343.09 km) |
| Welwyn Garden City to Czluchow | 743.78 mi (1,197.00 km) |
