| Welwyn Garden City to Marsala | 1,145.27 mi (1,843.13 km) |
| Welwyn Garden City to Marsciano | 846.80 mi (1,362.80 km) |
| Welwyn Garden City to Martano | 1,189.91 mi (1,914.97 km) |
| Welwyn Garden City to Martellago | 708.74 mi (1,140.61 km) |
| Welwyn Garden City to Martina Franca | 1,130.37 mi (1,819.16 km) |
| Welwyn Garden City to Martinengo | 625.11 mi (1,006.01 km) |
| Welwyn Garden City to Martinsicuro | 900.70 mi (1,449.53 km) |
| Welwyn Garden City to Mascali | 1,224.80 mi (1,971.12 km) |
| Welwyn Garden City to Mascalucia | 1,231.11 mi (1,981.27 km) |
| Welwyn Garden City to Masera di Padova | 709.19 mi (1,141.33 km) |
| Welwyn Garden City to Maserada sul Piave | 705.20 mi (1,134.91 km) |
| Welwyn Garden City to Massa | 717.69 mi (1,155.02 km) |
| Welwyn Garden City to Massa Lombarda | 749.99 mi (1,206.99 km) |
| Welwyn Garden City to Massafra | 1,128.98 mi (1,816.92 km) |
| Welwyn Garden City to Massalubrense | 1,036.00 mi (1,667.28 km) |
