| Welwyn Garden City to Collegno | 584.82 mi (941.18 km) |
| Welwyn Garden City to Cologno al Serio | 622.24 mi (1,001.39 km) |
| Welwyn Garden City to Cologno Monzese | 611.37 mi (983.90 km) |
| Welwyn Garden City to Colorno | 677.82 mi (1,090.85 km) |
| Welwyn Garden City to Comacchio | 750.06 mi (1,207.10 km) |
| Welwyn Garden City to Comiso | 1,254.69 mi (2,019.23 km) |
| Welwyn Garden City to Como | 590.67 mi (950.59 km) |
| Welwyn Garden City to Concordia Sagittaria | 724.04 mi (1,165.22 km) |
| Welwyn Garden City to Concorezzo | 610.06 mi (981.80 km) |
| Welwyn Garden City to Conegliano | 698.34 mi (1,123.87 km) |
| Welwyn Garden City to Conselice | 747.19 mi (1,202.49 km) |
| Welwyn Garden City to Conselve | 713.17 mi (1,147.74 km) |
| Welwyn Garden City to Conversano | 1,109.07 mi (1,784.88 km) |
| Welwyn Garden City to Copertino | 1,177.73 mi (1,895.37 km) |
| Welwyn Garden City to Copparo | 728.16 mi (1,171.86 km) |
