| Siauliai to Orbetello | 1,077.24 mi (1,733.65 km) |
| Siauliai to Oria | 1,097.05 mi (1,765.54 km) |
| Siauliai to Oristano | 1,294.43 mi (2,083.19 km) |
| Siauliai to Orta Nova | 1,065.49 mi (1,714.74 km) |
| Siauliai to Orte | 1,050.73 mi (1,690.99 km) |
| Siauliai to Ortona | 1,019.43 mi (1,640.61 km) |
| Siauliai to Orvieto | 1,040.27 mi (1,674.15 km) |
| Siauliai to Orzinuovi | 931.10 mi (1,498.47 km) |
| Siauliai to Osimo | 963.74 mi (1,550.99 km) |
| Siauliai to Ospitaletto | 918.41 mi (1,478.04 km) |
| Siauliai to Ostuni | 1,081.81 mi (1,741.01 km) |
| Siauliai to Ottaviano | 1,116.15 mi (1,796.27 km) |
| Siauliai to Ovada | 1,009.83 mi (1,625.17 km) |
| Siauliai to Ozieri | 1,242.76 mi (2,000.02 km) |
| Siauliai to Paceco | 1,336.46 mi (2,150.83 km) |
