| Welwyn Garden City to Cabestany | 647.29 mi (1,041.71 km) |
| Welwyn Garden City to Cabries | 633.11 mi (1,018.89 km) |
| Welwyn Garden City to Cachan | 236.18 mi (380.09 km) |
| Welwyn Garden City to Caen | 181.62 mi (292.29 km) |
| Welwyn Garden City to Cagnes-sur-Mer | 657.16 mi (1,057.60 km) |
| Welwyn Garden City to Cahors | 513.95 mi (827.13 km) |
| Welwyn Garden City to Calais | 106.43 mi (171.28 km) |
| Welwyn Garden City to Caluire-et-Cuire | 474.18 mi (763.12 km) |
| Welwyn Garden City to Cambrai | 186.81 mi (300.65 km) |
| Welwyn Garden City to Canet-en-Roussillon | 646.29 mi (1,040.10 km) |
| Welwyn Garden City to Cannes | 660.83 mi (1,063.51 km) |
| Welwyn Garden City to Canteleu | 171.40 mi (275.85 km) |
| Welwyn Garden City to Capbreton | 567.01 mi (912.51 km) |
| Welwyn Garden City to Carcassonne | 605.58 mi (974.59 km) |
| Welwyn Garden City to Carmaux | 546.82 mi (880.02 km) |
