| Middle River to Manerbio | 4,219.44 mi (6,790.54 km) |
| Middle River to Manfredonia | 4,599.82 mi (7,402.69 km) |
| Middle River to Maniago | 4,302.29 mi (6,923.87 km) |
| Middle River to Mantova | 4,254.50 mi (6,846.95 km) |
| Middle River to Maranello | 4,278.44 mi (6,885.48 km) |
| Middle River to Marano di Napoli | 4,550.88 mi (7,323.93 km) |
| Middle River to Marano Vicentino | 4,263.86 mi (6,862.02 km) |
| Middle River to Marcianise | 4,551.15 mi (7,324.36 km) |
| Middle River to Marcon | 4,305.36 mi (6,928.81 km) |
| Middle River to Mareno di Piave | 4,297.94 mi (6,916.87 km) |
| Middle River to Margherita di Savoia | 4,619.93 mi (7,435.07 km) |
| Middle River to Mariano Comense | 4,168.03 mi (6,707.80 km) |
| Middle River to Marigliano | 4,561.45 mi (7,340.94 km) |
| Middle River to Marino | 4,452.50 mi (7,165.60 km) |
| Middle River to Marostica | 4,271.74 mi (6,874.70 km) |
