| Welwyn Garden City to Deville-les-Rouen | 170.37 mi (274.18 km) |
| Welwyn Garden City to Dieppe | 141.65 mi (227.97 km) |
| Welwyn Garden City to Digne-les-Bains | 609.82 mi (981.42 km) |
| Welwyn Garden City to Dijon | 388.04 mi (624.48 km) |
| Welwyn Garden City to Dinan | 245.66 mi (395.35 km) |
| Welwyn Garden City to Dinard | 234.30 mi (377.08 km) |
| Welwyn Garden City to Divonne-les-Bains | 472.90 mi (761.05 km) |
| Welwyn Garden City to Dole | 413.53 mi (665.51 km) |
| Welwyn Garden City to Dombasle-sur-Meurthe | 363.08 mi (584.32 km) |
| Welwyn Garden City to Domerat | 395.93 mi (637.19 km) |
| Welwyn Garden City to Domont | 221.71 mi (356.80 km) |
| Welwyn Garden City to Douai | 173.20 mi (278.73 km) |
| Welwyn Garden City to Douarnenez | 315.61 mi (507.93 km) |
| Welwyn Garden City to Douchy-les-Mines | 187.25 mi (301.34 km) |
| Welwyn Garden City to Dourdan | 246.53 mi (396.75 km) |
