| Pontneddfechan to Olivares | 998.53 mi (1,606.99 km) |
| Pontneddfechan to Olivenza | 918.78 mi (1,478.64 km) |
| Pontneddfechan to Olot | 720.21 mi (1,159.07 km) |
| Pontneddfechan to Onate | 605.10 mi (973.82 km) |
| Pontneddfechan to Onda | 830.13 mi (1,335.96 km) |
| Pontneddfechan to Onteniente | 905.07 mi (1,456.56 km) |
| Pontneddfechan to Orihuela | 953.12 mi (1,533.90 km) |
| Pontneddfechan to Osuna | 1,006.09 mi (1,619.14 km) |
| Pontneddfechan to Ourense | 680.90 mi (1,095.81 km) |
| Pontneddfechan to Oviedo | 589.46 mi (948.64 km) |
| Pontneddfechan to Paiporta | 865.21 mi (1,392.42 km) |
| Pontneddfechan to Pajara | 1,705.98 mi (2,745.52 km) |
| Pontneddfechan to Palafolls | 758.12 mi (1,220.08 km) |
| Pontneddfechan to Palafrugell | 750.13 mi (1,207.22 km) |
| Pontneddfechan to Palamos | 754.02 mi (1,213.48 km) |
