| Siilinjarvi to Oria | 1,613.15 mi (2,596.11 km) |
| Siilinjarvi to Oristano | 1,782.90 mi (2,869.29 km) |
| Siilinjarvi to Orta Nova | 1,579.24 mi (2,541.54 km) |
| Siilinjarvi to Orte | 1,551.60 mi (2,497.06 km) |
| Siilinjarvi to Ortona | 1,528.66 mi (2,460.13 km) |
| Siilinjarvi to Orvieto | 1,539.13 mi (2,476.99 km) |
| Siilinjarvi to Orzinuovi | 1,404.78 mi (2,260.77 km) |
| Siilinjarvi to Osimo | 1,467.23 mi (2,361.28 km) |
| Siilinjarvi to Ospitaletto | 1,392.23 mi (2,240.58 km) |
| Siilinjarvi to Ostuni | 1,597.88 mi (2,571.54 km) |
| Siilinjarvi to Ottaviano | 1,627.47 mi (2,619.15 km) |
| Siilinjarvi to Ovada | 1,478.12 mi (2,378.81 km) |
| Siilinjarvi to Ozieri | 1,731.38 mi (2,786.39 km) |
| Siilinjarvi to Paceco | 1,845.50 mi (2,970.05 km) |
| Siilinjarvi to Pachino | 1,897.17 mi (3,053.20 km) |
