| Radviliskis to Orbetello | 1,075.01 mi (1,730.07 km) |
| Radviliskis to Oria | 1,090.76 mi (1,755.42 km) |
| Radviliskis to Oristano | 1,292.69 mi (2,080.38 km) |
| Radviliskis to Orta Nova | 1,060.41 mi (1,706.56 km) |
| Radviliskis to Orte | 1,047.86 mi (1,686.37 km) |
| Radviliskis to Ortona | 1,015.36 mi (1,634.07 km) |
| Radviliskis to Orvieto | 1,037.64 mi (1,669.93 km) |
| Radviliskis to Orzinuovi | 930.92 mi (1,498.17 km) |
| Radviliskis to Osimo | 960.59 mi (1,545.92 km) |
| Radviliskis to Ospitaletto | 918.24 mi (1,477.76 km) |
| Radviliskis to Ostuni | 1,075.59 mi (1,730.99 km) |
| Radviliskis to Ottaviano | 1,111.64 mi (1,789.02 km) |
| Radviliskis to Ovada | 1,009.95 mi (1,625.36 km) |
| Radviliskis to Ozieri | 1,241.03 mi (1,997.24 km) |
| Radviliskis to Paceco | 1,332.31 mi (2,144.14 km) |
