| Boulder City to Montalegre | 5,370.78 mi (8,643.43 km) |
| Boulder City to Montemor-o-Novo | 5,487.10 mi (8,830.64 km) |
| Boulder City to Montemor-o-Velho | 5,403.45 mi (8,696.01 km) |
| Boulder City to Montijo | 5,456.51 mi (8,781.40 km) |
| Boulder City to Mortagua | 5,411.08 mi (8,708.29 km) |
| Boulder City to Moura | 5,541.80 mi (8,918.67 km) |
| Boulder City to Murtosa | 5,381.81 mi (8,661.19 km) |
| Boulder City to Nazare | 5,410.99 mi (8,708.15 km) |
| Boulder City to Nelas | 5,423.51 mi (8,728.30 km) |
| Boulder City to Obidos | 5,417.23 mi (8,718.19 km) |
| Boulder City to Odemira | 5,514.38 mi (8,874.53 km) |
| Boulder City to Odivelas | 5,440.04 mi (8,754.90 km) |
| Boulder City to Oeiras | 5,438.64 mi (8,752.65 km) |
| Boulder City to Olhao | 5,572.39 mi (8,967.90 km) |
| Boulder City to Oliveira de Azemeis | 5,383.93 mi (8,664.60 km) |
