| Ramnicu Valcea to Orbetello | 681.18 mi (1,096.26 km) |
| Ramnicu Valcea to Oria | 466.65 mi (750.99 km) |
| Ramnicu Valcea to Oristano | 878.63 mi (1,414.02 km) |
| Ramnicu Valcea to Orta Nova | 507.83 mi (817.28 km) |
| Ramnicu Valcea to Orte | 624.67 mi (1,005.31 km) |
| Ramnicu Valcea to Ortona | 532.75 mi (857.38 km) |
| Ramnicu Valcea to Orvieto | 631.68 mi (1,016.60 km) |
| Ramnicu Valcea to Orzinuovi | 701.84 mi (1,129.50 km) |
| Ramnicu Valcea to Osimo | 549.74 mi (884.73 km) |
| Ramnicu Valcea to Ospitaletto | 694.50 mi (1,117.69 km) |
| Ramnicu Valcea to Ostuni | 457.24 mi (735.86 km) |
| Ramnicu Valcea to Ottaviano | 579.71 mi (932.96 km) |
| Ramnicu Valcea to Ovada | 769.64 mi (1,238.62 km) |
| Ramnicu Valcea to Ozieri | 837.35 mi (1,347.59 km) |
| Ramnicu Valcea to Paceco | 783.50 mi (1,260.92 km) |
