| Rathfarnham to Olivenza | 1,010.40 mi (1,626.08 km) |
| Rathfarnham to Olot | 868.08 mi (1,397.05 km) |
| Rathfarnham to Onate | 731.06 mi (1,176.53 km) |
| Rathfarnham to Onda | 963.87 mi (1,551.19 km) |
| Rathfarnham to Onteniente | 1,035.80 mi (1,666.96 km) |
| Rathfarnham to Orihuela | 1,081.48 mi (1,740.48 km) |
| Rathfarnham to Osuna | 1,111.47 mi (1,788.75 km) |
| Rathfarnham to Ourense | 760.91 mi (1,224.56 km) |
| Rathfarnham to Oviedo | 687.00 mi (1,105.62 km) |
| Rathfarnham to Paiporta | 997.54 mi (1,605.39 km) |
| Rathfarnham to Pajara | 1,769.08 mi (2,847.06 km) |
| Rathfarnham to Palafolls | 905.91 mi (1,457.92 km) |
| Rathfarnham to Palafrugell | 899.41 mi (1,447.46 km) |
| Rathfarnham to Palamos | 903.10 mi (1,453.40 km) |
| Rathfarnham to Palencia | 783.71 mi (1,261.25 km) |
