| Ardea to Olivenza | 1,054.92 mi (1,697.72 km) |
| Ardea to Olot | 518.58 mi (834.58 km) |
| Ardea to Onate | 769.74 mi (1,238.78 km) |
| Ardea to Onda | 679.32 mi (1,093.27 km) |
| Ardea to Onteniente | 719.68 mi (1,158.21 km) |
| Ardea to Orihuela | 755.38 mi (1,215.66 km) |
| Ardea to Osuna | 987.40 mi (1,589.06 km) |
| Ardea to Ourense | 1,047.20 mi (1,685.30 km) |
| Ardea to Oviedo | 942.98 mi (1,517.59 km) |
| Ardea to Paiporta | 696.97 mi (1,121.67 km) |
| Ardea to Pajara | 1,754.23 mi (2,823.17 km) |
| Ardea to Palafolls | 505.72 mi (813.87 km) |
| Ardea to Palafrugell | 483.95 mi (778.84 km) |
| Ardea to Palamos | 485.79 mi (781.80 km) |
| Ardea to Palencia | 878.66 mi (1,414.07 km) |
