| Sermoneta to Montemor-o-Novo | 1,135.22 mi (1,826.95 km) |
| Sermoneta to Montemor-o-Velho | 1,133.28 mi (1,823.83 km) |
| Sermoneta to Montijo | 1,169.84 mi (1,882.68 km) |
| Sermoneta to Mortagua | 1,106.38 mi (1,780.55 km) |
| Sermoneta to Moura | 1,106.61 mi (1,780.92 km) |
| Sermoneta to Murtosa | 1,123.26 mi (1,807.71 km) |
| Sermoneta to Nazare | 1,161.80 mi (1,869.74 km) |
| Sermoneta to Nelas | 1,085.52 mi (1,746.97 km) |
| Sermoneta to Obidos | 1,170.60 mi (1,883.91 km) |
| Sermoneta to Odemira | 1,180.13 mi (1,899.24 km) |
| Sermoneta to Odivelas | 1,182.19 mi (1,902.55 km) |
| Sermoneta to Oeiras | 1,191.37 mi (1,917.32 km) |
| Sermoneta to Olhao | 1,153.42 mi (1,856.25 km) |
| Sermoneta to Oliveira de Azemeis | 1,113.84 mi (1,792.56 km) |
| Sermoneta to Oliveira de Frades | 1,100.25 mi (1,770.68 km) |
