| Silea to Montemor-o-Novo | 1,152.49 mi (1,854.76 km) |
| Silea to Montemor-o-Velho | 1,123.39 mi (1,807.92 km) |
| Silea to Montijo | 1,182.86 mi (1,903.62 km) |
| Silea to Mortagua | 1,093.97 mi (1,760.57 km) |
| Silea to Moura | 1,136.61 mi (1,829.20 km) |
| Silea to Murtosa | 1,104.00 mi (1,776.72 km) |
| Silea to Nazare | 1,159.45 mi (1,865.96 km) |
| Silea to Nelas | 1,073.34 mi (1,727.37 km) |
| Silea to Obidos | 1,171.69 mi (1,885.64 km) |
| Silea to Odemira | 1,211.40 mi (1,949.55 km) |
| Silea to Odivelas | 1,192.07 mi (1,918.45 km) |
| Silea to Oeiras | 1,202.18 mi (1,934.72 km) |
| Silea to Olhao | 1,197.89 mi (1,927.82 km) |
| Silea to Oliveira de Azemeis | 1,093.40 mi (1,759.65 km) |
| Silea to Oliveira de Frades | 1,083.14 mi (1,743.14 km) |
