| Clayton to Manerbio | 788.25 mi (1,268.56 km) |
| Clayton to Manfredonia | 1,170.20 mi (1,883.25 km) |
| Clayton to Maniago | 830.18 mi (1,336.04 km) |
| Clayton to Mantova | 819.54 mi (1,318.93 km) |
| Clayton to Maranello | 855.74 mi (1,377.18 km) |
| Clayton to Marano di Napoli | 1,157.78 mi (1,863.26 km) |
| Clayton to Marano Vicentino | 811.02 mi (1,305.22 km) |
| Clayton to Marcianise | 1,153.65 mi (1,856.62 km) |
| Clayton to Marcon | 846.61 mi (1,362.49 km) |
| Clayton to Mareno di Piave | 833.93 mi (1,342.08 km) |
| Clayton to Margherita di Savoia | 1,192.14 mi (1,918.57 km) |
| Clayton to Mariano Comense | 741.90 mi (1,193.98 km) |
| Clayton to Marigliano | 1,163.79 mi (1,872.94 km) |
| Clayton to Marino | 1,064.08 mi (1,712.46 km) |
| Clayton to Marostica | 815.85 mi (1,312.98 km) |
