| Ponca City to Mangualde | 4,604.28 mi (7,409.87 km) |
| Ponca City to Marco de Canavezes | 4,567.12 mi (7,350.07 km) |
| Ponca City to Marinha Grande | 4,578.86 mi (7,368.96 km) |
| Ponca City to Massama | 4,596.21 mi (7,396.89 km) |
| Ponca City to Matosinhos | 4,542.02 mi (7,309.67 km) |
| Ponca City to Mealhada | 4,580.05 mi (7,370.88 km) |
| Ponca City to Melgaco | 4,531.00 mi (7,291.94 km) |
| Ponca City to Melres | 4,559.58 mi (7,337.94 km) |
| Ponca City to Mira | 4,565.33 mi (7,347.18 km) |
| Ponca City to Miranda do Corvo | 4,594.92 mi (7,394.82 km) |
| Ponca City to Mirandela | 4,600.97 mi (7,404.55 km) |
| Ponca City to Mogadouro | 4,627.13 mi (7,446.64 km) |
| Ponca City to Moimenta da Beira | 4,598.38 mi (7,400.37 km) |
| Ponca City to Moita | 4,613.53 mi (7,424.76 km) |
| Ponca City to Moncao | 4,522.79 mi (7,278.73 km) |
