| Horley to Manerbio | 619.97 mi (997.74 km) |
| Horley to Manfredonia | 1,007.10 mi (1,620.77 km) |
| Horley to Maniago | 680.92 mi (1,095.83 km) |
| Horley to Mantova | 653.13 mi (1,051.11 km) |
| Horley to Maranello | 686.03 mi (1,104.06 km) |
| Horley to Marano di Napoli | 985.56 mi (1,586.11 km) |
| Horley to Marano Vicentino | 651.52 mi (1,048.51 km) |
| Horley to Marcianise | 982.30 mi (1,580.87 km) |
| Horley to Marcon | 690.32 mi (1,110.96 km) |
| Horley to Mareno di Piave | 680.12 mi (1,094.55 km) |
| Horley to Margherita di Savoia | 1,028.77 mi (1,655.65 km) |
| Horley to Mariano Comense | 571.01 mi (918.95 km) |
| Horley to Marigliano | 992.62 mi (1,597.46 km) |
| Horley to Marino | 889.54 mi (1,431.58 km) |
| Horley to Marostica | 657.80 mi (1,058.63 km) |
