| Horley to Melzo | 588.76 mi (947.52 km) |
| Horley to Mendicino | 1,140.33 mi (1,835.19 km) |
| Horley to Menfi | 1,136.21 mi (1,828.55 km) |
| Horley to Mentana | 875.58 mi (1,409.11 km) |
| Horley to Merano | 600.30 mi (966.08 km) |
| Horley to Merate | 579.61 mi (932.79 km) |
| Horley to Mercato San Severino | 1,011.16 mi (1,627.31 km) |
| Horley to Mercogliano | 1,002.95 mi (1,614.10 km) |
| Horley to Mesagne | 1,128.08 mi (1,815.46 km) |
| Horley to Messina | 1,178.67 mi (1,896.89 km) |
| Horley to Mestre | 690.77 mi (1,111.69 km) |
| Horley to Mestrino | 674.97 mi (1,086.25 km) |
| Horley to Milan | 582.70 mi (937.77 km) |
| Horley to Milazzo | 1,167.43 mi (1,878.79 km) |
| Horley to Minerbio | 702.95 mi (1,131.29 km) |
