| Niagara Falls to Massarosa | 4,239.05 mi (6,822.10 km) |
| Niagara Falls to Matelica | 4,373.38 mi (7,038.28 km) |
| Niagara Falls to Matera | 4,628.09 mi (7,448.19 km) |
| Niagara Falls to Matino | 4,718.57 mi (7,593.81 km) |
| Niagara Falls to Mazzarino | 4,669.21 mi (7,514.37 km) |
| Niagara Falls to Meda | 4,123.35 mi (6,635.88 km) |
| Niagara Falls to Medesano | 4,197.17 mi (6,754.70 km) |
| Niagara Falls to Medicina | 4,268.81 mi (6,869.99 km) |
| Niagara Falls to Meldola | 4,299.45 mi (6,919.29 km) |
| Niagara Falls to Melegnano | 4,141.16 mi (6,664.56 km) |
| Niagara Falls to Melendugno | 4,716.71 mi (7,590.81 km) |
| Niagara Falls to Melfi | 4,574.69 mi (7,362.25 km) |
| Niagara Falls to Melilli | 4,713.85 mi (7,586.21 km) |
| Niagara Falls to Melito di Napoli | 4,519.11 mi (7,272.81 km) |
| Niagara Falls to Melito di Porto Salvo | 4,711.03 mi (7,581.67 km) |
