| Tarquinia to Olivenza | 1,018.99 mi (1,639.90 km) |
| Tarquinia to Olot | 474.00 mi (762.84 km) |
| Tarquinia to Onate | 721.51 mi (1,161.16 km) |
| Tarquinia to Onda | 644.80 mi (1,037.71 km) |
| Tarquinia to Onteniente | 690.25 mi (1,110.85 km) |
| Tarquinia to Orihuela | 728.84 mi (1,172.95 km) |
| Tarquinia to Osuna | 958.20 mi (1,542.08 km) |
| Tarquinia to Ourense | 1,000.52 mi (1,610.19 km) |
| Tarquinia to Oviedo | 893.86 mi (1,438.53 km) |
| Tarquinia to Paiporta | 664.89 mi (1,070.04 km) |
| Tarquinia to Pajara | 1,734.84 mi (2,791.95 km) |
| Tarquinia to Palafolls | 464.21 mi (747.07 km) |
| Tarquinia to Palafrugell | 441.05 mi (709.80 km) |
| Tarquinia to Palamos | 443.33 mi (713.47 km) |
| Tarquinia to Palencia | 833.53 mi (1,341.44 km) |
