| Welwyn Garden City to Massarosa | 732.89 mi (1,179.47 km) |
| Welwyn Garden City to Matelica | 850.98 mi (1,369.52 km) |
| Welwyn Garden City to Matera | 1,106.98 mi (1,781.51 km) |
| Welwyn Garden City to Matino | 1,192.77 mi (1,919.58 km) |
| Welwyn Garden City to Mazzarino | 1,222.68 mi (1,967.71 km) |
| Welwyn Garden City to Meda | 600.65 mi (966.65 km) |
| Welwyn Garden City to Medesano | 679.31 mi (1,093.25 km) |
| Welwyn Garden City to Medicina | 742.14 mi (1,194.36 km) |
| Welwyn Garden City to Meldola | 773.89 mi (1,245.45 km) |
| Welwyn Garden City to Melegnano | 621.66 mi (1,000.46 km) |
| Welwyn Garden City to Melendugno | 1,187.63 mi (1,911.30 km) |
| Welwyn Garden City to Melfi | 1,057.39 mi (1,701.71 km) |
| Welwyn Garden City to Melilli | 1,255.54 mi (2,020.60 km) |
| Welwyn Garden City to Melito di Napoli | 1,015.79 mi (1,634.75 km) |
| Welwyn Garden City to Melito di Porto Salvo | 1,232.58 mi (1,983.65 km) |
