| Ancona to Olivenza | 1,122.00 mi (1,805.68 km) |
| Ancona to Olot | 566.45 mi (911.61 km) |
| Ancona to Onate | 800.65 mi (1,288.52 km) |
| Ancona to Onda | 752.38 mi (1,210.84 km) |
| Ancona to Onteniente | 803.95 mi (1,293.83 km) |
| Ancona to Orihuela | 845.41 mi (1,360.55 km) |
| Ancona to Osuna | 1,070.81 mi (1,723.31 km) |
| Ancona to Ourense | 1,081.39 mi (1,740.33 km) |
| Ancona to Oviedo | 968.53 mi (1,558.69 km) |
| Ancona to Paiporta | 775.57 mi (1,248.16 km) |
| Ancona to Pajara | 1,855.79 mi (2,986.60 km) |
| Ancona to Palafolls | 563.03 mi (906.12 km) |
| Ancona to Palafrugell | 537.74 mi (865.41 km) |
| Ancona to Palamos | 540.82 mi (870.37 km) |
| Ancona to Palencia | 919.62 mi (1,479.98 km) |
