| Miercurea-Ciuc to Olivenza | 1,742.94 mi (2,805.00 km) |
| Miercurea-Ciuc to Olot | 1,184.19 mi (1,905.78 km) |
| Miercurea-Ciuc to Onate | 1,397.19 mi (2,248.56 km) |
| Miercurea-Ciuc to Onda | 1,378.61 mi (2,218.65 km) |
| Miercurea-Ciuc to Onteniente | 1,432.41 mi (2,305.24 km) |
| Miercurea-Ciuc to Orihuela | 1,474.16 mi (2,372.43 km) |
| Miercurea-Ciuc to Osuna | 1,698.67 mi (2,733.74 km) |
| Miercurea-Ciuc to Ourense | 1,673.41 mi (2,693.09 km) |
| Miercurea-Ciuc to Oviedo | 1,553.17 mi (2,499.59 km) |
| Miercurea-Ciuc to Paiporta | 1,403.16 mi (2,258.16 km) |
| Miercurea-Ciuc to Pajara | 2,483.57 mi (3,996.92 km) |
| Miercurea-Ciuc to Palafolls | 1,185.57 mi (1,907.99 km) |
| Miercurea-Ciuc to Palafrugell | 1,159.27 mi (1,865.66 km) |
| Miercurea-Ciuc to Palamos | 1,162.83 mi (1,871.39 km) |
| Miercurea-Ciuc to Palencia | 1,522.74 mi (2,450.62 km) |
