| Opa-locka to Mangualde | 4,192.43 mi (6,747.06 km) |
| Opa-locka to Marco de Canavezes | 4,165.47 mi (6,703.68 km) |
| Opa-locka to Marinha Grande | 4,141.95 mi (6,665.82 km) |
| Opa-locka to Massama | 4,136.21 mi (6,656.59 km) |
| Opa-locka to Matosinhos | 4,137.27 mi (6,658.30 km) |
| Opa-locka to Mealhada | 4,159.48 mi (6,694.04 km) |
| Opa-locka to Melgaco | 4,148.97 mi (6,677.12 km) |
| Opa-locka to Melres | 4,154.00 mi (6,685.22 km) |
| Opa-locka to Mira | 4,144.20 mi (6,669.45 km) |
| Opa-locka to Miranda do Corvo | 4,168.98 mi (6,709.32 km) |
| Opa-locka to Mirandela | 4,211.36 mi (6,777.53 km) |
| Opa-locka to Mogadouro | 4,236.95 mi (6,818.71 km) |
| Opa-locka to Moimenta da Beira | 4,195.42 mi (6,751.88 km) |
| Opa-locka to Moita | 4,153.02 mi (6,683.64 km) |
| Opa-locka to Moncao | 4,138.64 mi (6,660.50 km) |
