| Idrija to Montalegre | 1,119.82 mi (1,802.18 km) |
| Idrija to Montemor-o-Novo | 1,239.21 mi (1,994.31 km) |
| Idrija to Montemor-o-Velho | 1,209.87 mi (1,947.10 km) |
| Idrija to Montijo | 1,269.58 mi (2,043.19 km) |
| Idrija to Mortagua | 1,180.41 mi (1,899.69 km) |
| Idrija to Moura | 1,223.18 mi (1,968.53 km) |
| Idrija to Murtosa | 1,190.25 mi (1,915.52 km) |
| Idrija to Nazare | 1,246.05 mi (2,005.33 km) |
| Idrija to Nelas | 1,159.80 mi (1,866.52 km) |
| Idrija to Obidos | 1,258.33 mi (2,025.08 km) |
| Idrija to Odemira | 1,297.98 mi (2,088.90 km) |
| Idrija to Odivelas | 1,278.78 mi (2,058.00 km) |
| Idrija to Oeiras | 1,288.90 mi (2,074.28 km) |
| Idrija to Olhao | 1,284.16 mi (2,066.66 km) |
| Idrija to Oliveira de Azemeis | 1,179.62 mi (1,898.41 km) |
