| Olbia to Orzesze | 778.08 mi (1,252.20 km) |
| Olbia to Osowa | 1,020.62 mi (1,642.53 km) |
| Olbia to Ostroda | 1,007.81 mi (1,621.91 km) |
| Olbia to Ostroleka | 1,010.99 mi (1,627.03 km) |
| Olbia to Ostrow Mazowiecka | 1,005.58 mi (1,618.33 km) |
| Olbia to Ostrow Wielkopolski | 839.93 mi (1,351.73 km) |
| Olbia to Ostrowiec Swietokrzyski | 895.52 mi (1,441.21 km) |
| Olbia to Ostrzeszow | 828.90 mi (1,333.98 km) |
| Olbia to Oswiecim | 785.37 mi (1,263.94 km) |
| Olbia to Otwock | 952.32 mi (1,532.62 km) |
| Olbia to Ozarow Mazowiecki | 945.06 mi (1,520.93 km) |
| Olbia to Ozimek | 792.87 mi (1,276.00 km) |
| Olbia to Ozorkow | 892.57 mi (1,436.46 km) |
| Olbia to Pabianice | 877.27 mi (1,411.83 km) |
| Olbia to Parczew | 974.52 mi (1,568.35 km) |
