| Iernut to Olivenza | 1,669.46 mi (2,686.74 km) |
| Iernut to Olot | 1,110.71 mi (1,787.52 km) |
| Iernut to Onate | 1,322.46 mi (2,128.29 km) |
| Iernut to Onda | 1,306.23 mi (2,102.18 km) |
| Iernut to Onteniente | 1,360.99 mi (2,190.30 km) |
| Iernut to Orihuela | 1,403.32 mi (2,258.43 km) |
| Iernut to Osuna | 1,626.76 mi (2,618.02 km) |
| Iernut to Ourense | 1,598.50 mi (2,572.53 km) |
| Iernut to Oviedo | 1,478.20 mi (2,378.93 km) |
| Iernut to Paiporta | 1,331.22 mi (2,142.40 km) |
| Iernut to Pajara | 2,413.89 mi (3,884.79 km) |
| Iernut to Palafolls | 1,112.63 mi (1,790.61 km) |
| Iernut to Palafrugell | 1,086.22 mi (1,748.10 km) |
| Iernut to Palamos | 1,089.84 mi (1,753.93 km) |
| Iernut to Palencia | 1,448.15 mi (2,330.57 km) |
