| Clayton to Melzo | 759.73 mi (1,222.67 km) |
| Clayton to Mendicino | 1,311.13 mi (2,110.06 km) |
| Clayton to Menfi | 1,319.95 mi (2,124.25 km) |
| Clayton to Mentana | 1,049.28 mi (1,688.66 km) |
| Clayton to Merano | 753.16 mi (1,212.10 km) |
| Clayton to Merate | 749.25 mi (1,205.80 km) |
| Clayton to Mercato San Severino | 1,181.76 mi (1,901.86 km) |
| Clayton to Mercogliano | 1,173.14 mi (1,887.99 km) |
| Clayton to Mesagne | 1,288.77 mi (2,074.08 km) |
| Clayton to Messina | 1,354.37 mi (2,179.64 km) |
| Clayton to Mestre | 847.84 mi (1,364.47 km) |
| Clayton to Mestrino | 834.65 mi (1,343.24 km) |
| Clayton to Milan | 754.98 mi (1,215.03 km) |
| Clayton to Milazzo | 1,343.98 mi (2,162.93 km) |
| Clayton to Minerbio | 869.43 mi (1,399.22 km) |
