| Aylesbury to Olivares | 1,028.29 mi (1,654.88 km) |
| Aylesbury to Olivenza | 956.54 mi (1,539.41 km) |
| Aylesbury to Olot | 683.43 mi (1,099.88 km) |
| Aylesbury to Onate | 611.46 mi (984.04 km) |
| Aylesbury to Onda | 819.47 mi (1,318.81 km) |
| Aylesbury to Onteniente | 897.89 mi (1,445.02 km) |
| Aylesbury to Orihuela | 948.76 mi (1,526.88 km) |
| Aylesbury to Osuna | 1,029.06 mi (1,656.11 km) |
| Aylesbury to Ourense | 733.44 mi (1,180.37 km) |
| Aylesbury to Oviedo | 629.24 mi (1,012.66 km) |
| Aylesbury to Paiporta | 856.21 mi (1,377.93 km) |
| Aylesbury to Pajara | 1,760.58 mi (2,833.38 km) |
| Aylesbury to Palafolls | 720.91 mi (1,160.19 km) |
| Aylesbury to Palafrugell | 709.02 mi (1,141.05 km) |
| Aylesbury to Palamos | 713.40 mi (1,148.11 km) |
