| Welwyn Garden City to Marasesti | 1,303.42 mi (2,097.65 km) |
| Welwyn Garden City to Marghita | 1,050.26 mi (1,690.22 km) |
| Welwyn Garden City to Marginea | 1,185.82 mi (1,908.39 km) |
| Welwyn Garden City to Matca | 1,317.25 mi (2,119.91 km) |
| Welwyn Garden City to Medgidia | 1,403.47 mi (2,258.67 km) |
| Welwyn Garden City to Media | 1,172.91 mi (1,887.62 km) |
| Welwyn Garden City to Miercurea-Ciuc | 1,227.46 mi (1,975.41 km) |
| Welwyn Garden City to Mioveni | 1,238.82 mi (1,993.68 km) |
| Welwyn Garden City to Mizil | 1,300.06 mi (2,092.24 km) |
| Welwyn Garden City to Moinesti | 1,254.03 mi (2,018.17 km) |
| Welwyn Garden City to Moisei | 1,135.04 mi (1,826.68 km) |
| Welwyn Garden City to Moldova Noua | 1,112.49 mi (1,790.38 km) |
| Welwyn Garden City to Moreni | 1,267.38 mi (2,039.66 km) |
| Welwyn Garden City to Motru | 1,162.78 mi (1,871.31 km) |
| Welwyn Garden City to Murfatlar | 1,412.45 mi (2,273.12 km) |
