| Webster Groves to Massarosa | 4,896.70 mi (7,880.48 km) |
| Webster Groves to Matelica | 5,029.54 mi (8,094.26 km) |
| Webster Groves to Matera | 5,285.25 mi (8,505.79 km) |
| Webster Groves to Matino | 5,375.16 mi (8,650.49 km) |
| Webster Groves to Mazzarino | 5,333.40 mi (8,583.28 km) |
| Webster Groves to Meda | 4,778.47 mi (7,690.20 km) |
| Webster Groves to Medesano | 4,853.27 mi (7,810.58 km) |
| Webster Groves to Medicina | 4,923.93 mi (7,924.29 km) |
| Webster Groves to Meldola | 4,954.85 mi (7,974.06 km) |
| Webster Groves to Melegnano | 4,796.79 mi (7,719.68 km) |
| Webster Groves to Melendugno | 5,372.65 mi (8,646.45 km) |
| Webster Groves to Melfi | 5,232.27 mi (8,420.53 km) |
| Webster Groves to Melilli | 5,377.51 mi (8,654.26 km) |
| Webster Groves to Melito di Napoli | 5,178.27 mi (8,333.62 km) |
| Webster Groves to Melito di Porto Salvo | 5,373.24 mi (8,647.40 km) |
