| Idanha-a-Nova to Olivenza | 85.34 mi (137.34 km) |
| Idanha-a-Nova to Olot | 529.87 mi (852.74 km) |
| Idanha-a-Nova to Onate | 329.36 mi (530.05 km) |
| Idanha-a-Nova to Onda | 369.13 mi (594.05 km) |
| Idanha-a-Nova to Onteniente | 361.82 mi (582.30 km) |
| Idanha-a-Nova to Orihuela | 360.37 mi (579.97 km) |
| Idanha-a-Nova to Osuna | 218.28 mi (351.29 km) |
| Idanha-a-Nova to Ourense | 170.37 mi (274.18 km) |
| Idanha-a-Nova to Oviedo | 248.46 mi (399.86 km) |
| Idanha-a-Nova to Paiporta | 363.91 mi (585.66 km) |
| Idanha-a-Nova to Pajara | 889.72 mi (1,431.87 km) |
| Idanha-a-Nova to Palafolls | 535.76 mi (862.22 km) |
| Idanha-a-Nova to Palafrugell | 559.73 mi (900.81 km) |
| Idanha-a-Nova to Palamos | 557.09 mi (896.56 km) |
| Idanha-a-Nova to Palencia | 202.20 mi (325.42 km) |
