| Welwyn Garden City to Creutzwald | 351.83 mi (566.22 km) |
| Welwyn Garden City to Croissy-sur-Seine | 227.00 mi (365.33 km) |
| Welwyn Garden City to Croix | 164.28 mi (264.39 km) |
| Welwyn Garden City to Crosne | 243.62 mi (392.07 km) |
| Welwyn Garden City to Cuers | 659.67 mi (1,061.63 km) |
| Welwyn Garden City to Cugnaux | 575.71 mi (926.52 km) |
| Welwyn Garden City to Cusset | 425.27 mi (684.41 km) |
| Welwyn Garden City to Dammarie-le-Lys | 259.48 mi (417.59 km) |
| Welwyn Garden City to Dammartin-en-Goele | 228.35 mi (367.50 km) |
| Welwyn Garden City to Dardilly | 471.50 mi (758.81 km) |
| Welwyn Garden City to Darnetal | 173.47 mi (279.17 km) |
| Welwyn Garden City to Dax | 560.80 mi (902.51 km) |
| Welwyn Garden City to Decines-Charpieu | 478.25 mi (769.66 km) |
| Welwyn Garden City to Denain | 186.23 mi (299.71 km) |
| Welwyn Garden City to Deuil-la-Barre | 224.79 mi (361.77 km) |
