| Clayton to Montevarchi | 932.31 mi (1,500.42 km) |
| Clayton to Monticello Conte Otto | 821.00 mi (1,321.28 km) |
| Clayton to Montichiari | 793.39 mi (1,276.84 km) |
| Clayton to Montignoso | 864.40 mi (1,391.11 km) |
| Clayton to Montopoli in Val d'Arno | 900.81 mi (1,449.71 km) |
| Clayton to Monza | 750.95 mi (1,208.53 km) |
| Clayton to Morbegno | 729.86 mi (1,174.60 km) |
| Clayton to Mori | 788.88 mi (1,269.59 km) |
| Clayton to Morlupo | 1,037.85 mi (1,670.25 km) |
| Clayton to Morrovalle | 1,005.19 mi (1,617.69 km) |
| Clayton to Mortara | 754.69 mi (1,214.56 km) |
| Clayton to Mosciano Sant'Angelo | 1,045.33 mi (1,682.29 km) |
| Clayton to Motta di Livenza | 845.54 mi (1,360.77 km) |
| Clayton to Motta Sant'Anastasia | 1,379.08 mi (2,219.41 km) |
| Clayton to Mottola | 1,260.41 mi (2,028.43 km) |
