| Ronciglione to Olivenza | 1,042.60 mi (1,677.90 km) |
| Ronciglione to Olot | 497.31 mi (800.34 km) |
| Ronciglione to Onate | 744.24 mi (1,197.74 km) |
| Ronciglione to Onda | 668.38 mi (1,075.65 km) |
| Ronciglione to Onteniente | 713.58 mi (1,148.39 km) |
| Ronciglione to Orihuela | 751.94 mi (1,210.13 km) |
| Ronciglione to Osuna | 981.55 mi (1,579.65 km) |
| Ronciglione to Ourense | 1,023.46 mi (1,647.10 km) |
| Ronciglione to Oviedo | 916.37 mi (1,474.75 km) |
| Ronciglione to Paiporta | 688.37 mi (1,107.83 km) |
| Ronciglione to Pajara | 1,757.27 mi (2,828.05 km) |
| Ronciglione to Palafolls | 487.74 mi (784.93 km) |
| Ronciglione to Palafrugell | 464.50 mi (747.54 km) |
| Ronciglione to Palamos | 466.81 mi (751.26 km) |
| Ronciglione to Palencia | 856.70 mi (1,378.73 km) |
