| Senec to Montalegre | 1,300.14 mi (2,092.38 km) |
| Senec to Montemor-o-Novo | 1,435.86 mi (2,310.80 km) |
| Senec to Montemor-o-Velho | 1,398.04 mi (2,249.93 km) |
| Senec to Montijo | 1,464.54 mi (2,356.95 km) |
| Senec to Mortagua | 1,368.18 mi (2,201.87 km) |
| Senec to Moura | 1,423.72 mi (2,291.26 km) |
| Senec to Murtosa | 1,375.37 mi (2,213.44 km) |
| Senec to Nazare | 1,436.29 mi (2,311.48 km) |
| Senec to Nelas | 1,348.01 mi (2,169.41 km) |
| Senec to Obidos | 1,449.55 mi (2,332.83 km) |
| Senec to Odemira | 1,498.07 mi (2,410.91 km) |
| Senec to Odivelas | 1,472.63 mi (2,369.97 km) |
| Senec to Oeiras | 1,482.92 mi (2,386.52 km) |
| Senec to Olhao | 1,487.94 mi (2,394.61 km) |
| Senec to Oliveira de Azemeis | 1,364.48 mi (2,195.92 km) |
