| Welwyn Garden City to Marly-le-Roi | 226.73 mi (364.89 km) |
| Welwyn Garden City to Marmande | 505.08 mi (812.84 km) |
| Welwyn Garden City to Maromme | 169.46 mi (272.72 km) |
| Welwyn Garden City to Marquette-les-Lille | 161.15 mi (259.35 km) |
| Welwyn Garden City to Marseille | 642.20 mi (1,033.51 km) |
| Welwyn Garden City to Martigues | 629.29 mi (1,012.74 km) |
| Welwyn Garden City to Massy | 238.70 mi (384.16 km) |
| Welwyn Garden City to Maubeuge | 209.52 mi (337.20 km) |
| Welwyn Garden City to Mauguio | 598.35 mi (962.96 km) |
| Welwyn Garden City to Mauleon | 338.34 mi (544.50 km) |
| Welwyn Garden City to Maurepas | 230.48 mi (370.92 km) |
| Welwyn Garden City to Maxeville | 352.72 mi (567.64 km) |
| Welwyn Garden City to Mayenne | 242.76 mi (390.68 km) |
| Welwyn Garden City to Mazamet | 586.67 mi (944.15 km) |
| Welwyn Garden City to Meaux | 238.90 mi (384.47 km) |
