| Rapid City to Montalegre | 4,532.25 mi (7,293.95 km) |
| Rapid City to Montemor-o-Novo | 4,651.82 mi (7,486.37 km) |
| Rapid City to Montemor-o-Velho | 4,566.76 mi (7,349.49 km) |
| Rapid City to Montijo | 4,621.72 mi (7,437.93 km) |
| Rapid City to Mortagua | 4,573.86 mi (7,360.92 km) |
| Rapid City to Moura | 4,706.56 mi (7,574.48 km) |
| Rapid City to Murtosa | 4,544.54 mi (7,313.73 km) |
| Rapid City to Nazare | 4,575.18 mi (7,363.04 km) |
| Rapid City to Nelas | 4,586.01 mi (7,380.47 km) |
| Rapid City to Obidos | 4,581.78 mi (7,373.66 km) |
| Rapid City to Odemira | 4,680.87 mi (7,533.14 km) |
| Rapid City to Odivelas | 4,605.33 mi (7,411.57 km) |
| Rapid City to Oeiras | 4,604.19 mi (7,409.72 km) |
| Rapid City to Olhao | 4,738.96 mi (7,626.63 km) |
| Rapid City to Oliveira de Azemeis | 4,546.48 mi (7,316.85 km) |
