| Dayton to Montalegre | 3,859.38 mi (6,211.08 km) |
| Dayton to Montemor-o-Novo | 3,936.67 mi (6,335.46 km) |
| Dayton to Montemor-o-Velho | 3,867.37 mi (6,223.93 km) |
| Dayton to Montijo | 3,902.80 mi (6,280.95 km) |
| Dayton to Mortagua | 3,880.54 mi (6,245.12 km) |
| Dayton to Moura | 3,989.99 mi (6,421.26 km) |
| Dayton to Murtosa | 3,852.59 mi (6,200.14 km) |
| Dayton to Nazare | 3,866.43 mi (6,222.42 km) |
| Dayton to Nelas | 3,896.07 mi (6,270.11 km) |
| Dayton to Obidos | 3,869.50 mi (6,227.36 km) |
| Dayton to Odemira | 3,950.54 mi (6,357.78 km) |
| Dayton to Odivelas | 3,886.01 mi (6,253.93 km) |
| Dayton to Oeiras | 3,882.75 mi (6,248.68 km) |
| Dayton to Olhao | 4,007.06 mi (6,448.73 km) |
| Dayton to Oliveira de Azemeis | 3,856.84 mi (6,206.98 km) |
