| Dublin to Olivenza | 1,013.98 mi (1,631.85 km) |
| Dublin to Olot | 870.57 mi (1,401.05 km) |
| Dublin to Onate | 734.19 mi (1,181.57 km) |
| Dublin to Onda | 966.86 mi (1,556.01 km) |
| Dublin to Onteniente | 1,038.87 mi (1,671.90 km) |
| Dublin to Orihuela | 1,084.61 mi (1,745.51 km) |
| Dublin to Osuna | 1,114.94 mi (1,794.33 km) |
| Dublin to Ourense | 764.54 mi (1,230.40 km) |
| Dublin to Oviedo | 690.50 mi (1,111.26 km) |
| Dublin to Paiporta | 1,000.57 mi (1,610.26 km) |
| Dublin to Pajara | 1,772.77 mi (2,852.99 km) |
| Dublin to Palafolls | 908.41 mi (1,461.94 km) |
| Dublin to Palafrugell | 901.82 mi (1,451.34 km) |
| Dublin to Palamos | 905.53 mi (1,457.31 km) |
| Dublin to Palencia | 787.10 mi (1,266.72 km) |
