| Louth to Olivares | 1,140.61 mi (1,835.63 km) |
| Louth to Olivenza | 1,068.65 mi (1,719.83 km) |
| Louth to Olot | 781.30 mi (1,257.38 km) |
| Louth to Onate | 722.45 mi (1,162.67 km) |
| Louth to Onda | 926.23 mi (1,490.63 km) |
| Louth to Onteniente | 1,005.34 mi (1,617.95 km) |
| Louth to Orihuela | 1,056.79 mi (1,700.73 km) |
| Louth to Osuna | 1,141.15 mi (1,836.50 km) |
| Louth to Ourense | 843.52 mi (1,357.52 km) |
| Louth to Oviedo | 740.93 mi (1,192.41 km) |
| Louth to Paiporta | 963.29 mi (1,550.27 km) |
| Louth to Pajara | 1,871.01 mi (3,011.10 km) |
| Louth to Palafolls | 818.24 mi (1,316.83 km) |
| Louth to Palafrugell | 804.51 mi (1,294.74 km) |
| Louth to Palamos | 809.11 mi (1,302.14 km) |
