| Drogheda to Olivenza | 1,039.02 mi (1,672.14 km) |
| Drogheda to Olot | 894.17 mi (1,439.02 km) |
| Drogheda to Onate | 759.51 mi (1,222.32 km) |
| Drogheda to Onda | 991.92 mi (1,596.34 km) |
| Drogheda to Onteniente | 1,064.08 mi (1,712.48 km) |
| Drogheda to Orihuela | 1,109.92 mi (1,786.24 km) |
| Drogheda to Osuna | 1,140.34 mi (1,835.21 km) |
| Drogheda to Ourense | 789.23 mi (1,270.14 km) |
| Drogheda to Oviedo | 715.83 mi (1,152.02 km) |
| Drogheda to Paiporta | 1,025.71 mi (1,650.72 km) |
| Drogheda to Pajara | 1,795.98 mi (2,890.36 km) |
| Drogheda to Palafolls | 932.02 mi (1,499.95 km) |
| Drogheda to Palafrugell | 925.15 mi (1,488.89 km) |
| Drogheda to Palamos | 928.90 mi (1,494.92 km) |
| Drogheda to Palencia | 812.59 mi (1,307.74 km) |
