| Niagara Falls to Masanasa | 3,936.24 mi (6,334.77 km) |
| Niagara Falls to Masquefa | 3,960.70 mi (6,374.13 km) |
| Niagara Falls to Matadepera | 3,966.47 mi (6,383.41 km) |
| Niagara Falls to Mazarron | 3,959.86 mi (6,372.78 km) |
| Niagara Falls to Meco | 3,762.55 mi (6,055.24 km) |
| Niagara Falls to Medina del Campo | 3,664.93 mi (5,898.14 km) |
| Niagara Falls to Medina Sidonia | 3,784.58 mi (6,090.70 km) |
| Niagara Falls to Mejorada del Campo | 3,765.19 mi (6,059.49 km) |
| Niagara Falls to Meliana | 3,934.24 mi (6,331.54 km) |
| Niagara Falls to Mengibar | 3,830.34 mi (6,164.34 km) |
| Niagara Falls to Merida | 3,679.90 mi (5,922.23 km) |
| Niagara Falls to Miajadas | 3,683.84 mi (5,928.57 km) |
| Niagara Falls to Mieres | 3,563.43 mi (5,734.79 km) |
| Niagara Falls to Miguelturra | 3,788.60 mi (6,097.17 km) |
| Niagara Falls to Mijas | 3,840.63 mi (6,180.90 km) |
