| Webster Groves to Manerbio | 4,828.73 mi (7,771.09 km) |
| Webster Groves to Manfredonia | 5,215.36 mi (8,393.31 km) |
| Webster Groves to Maniago | 4,897.63 mi (7,881.98 km) |
| Webster Groves to Mantova | 4,863.24 mi (7,826.63 km) |
| Webster Groves to Maranello | 4,891.32 mi (7,871.81 km) |
| Webster Groves to Marano di Napoli | 5,176.94 mi (8,331.48 km) |
| Webster Groves to Marano Vicentino | 4,866.70 mi (7,832.19 km) |
| Webster Groves to Marcianise | 5,175.99 mi (8,329.95 km) |
| Webster Groves to Marcon | 4,906.48 mi (7,896.21 km) |
| Webster Groves to Mareno di Piave | 4,896.83 mi (7,880.68 km) |
| Webster Groves to Margherita di Savoia | 5,236.37 mi (8,427.12 km) |
| Webster Groves to Mariano Comense | 4,777.83 mi (7,689.17 km) |
| Webster Groves to Marigliano | 5,186.41 mi (8,346.72 km) |
| Webster Groves to Marino | 5,078.07 mi (8,172.37 km) |
| Webster Groves to Marostica | 4,873.54 mi (7,843.21 km) |
