| Aberystwyth to Olivares | 1,041.03 mi (1,675.38 km) |
| Aberystwyth to Olivenza | 959.49 mi (1,544.16 km) |
| Aberystwyth to Olot | 770.30 mi (1,239.67 km) |
| Aberystwyth to Onate | 652.70 mi (1,050.41 km) |
| Aberystwyth to Onda | 879.15 mi (1,414.86 km) |
| Aberystwyth to Onteniente | 953.70 mi (1,534.83 km) |
| Aberystwyth to Orihuela | 1,001.42 mi (1,611.63 km) |
| Aberystwyth to Osuna | 1,050.05 mi (1,689.88 km) |
| Aberystwyth to Ourense | 718.17 mi (1,155.79 km) |
| Aberystwyth to Oviedo | 630.84 mi (1,015.23 km) |
| Aberystwyth to Paiporta | 914.06 mi (1,471.03 km) |
| Aberystwyth to Pajara | 1,740.43 mi (2,800.95 km) |
| Aberystwyth to Palafolls | 808.21 mi (1,300.68 km) |
| Aberystwyth to Palafrugell | 800.15 mi (1,287.72 km) |
| Aberystwyth to Palamos | 804.05 mi (1,294.00 km) |
