| Roman to Olivenza | 1,800.22 mi (2,897.18 km) |
| Roman to Olot | 1,241.56 mi (1,998.09 km) |
| Roman to Onate | 1,450.41 mi (2,334.20 km) |
| Roman to Onda | 1,437.88 mi (2,314.04 km) |
| Roman to Onteniente | 1,492.91 mi (2,402.61 km) |
| Roman to Orihuela | 1,535.29 mi (2,470.81 km) |
| Roman to Osuna | 1,758.56 mi (2,830.14 km) |
| Roman to Ourense | 1,725.17 mi (2,776.39 km) |
| Roman to Oviedo | 1,604.14 mi (2,581.62 km) |
| Roman to Paiporta | 1,463.03 mi (2,354.52 km) |
| Roman to Pajara | 2,545.77 mi (4,097.02 km) |
| Roman to Palafolls | 1,243.97 mi (2,001.98 km) |
| Roman to Palafrugell | 1,217.48 mi (1,959.34 km) |
| Roman to Palamos | 1,221.14 mi (1,965.24 km) |
| Roman to Palencia | 1,576.67 mi (2,537.41 km) |
