| Tortona to Orzesze | 586.18 mi (943.36 km) |
| Tortona to Osowa | 784.82 mi (1,263.04 km) |
| Tortona to Ostroda | 785.77 mi (1,264.57 km) |
| Tortona to Ostroleka | 804.37 mi (1,294.50 km) |
| Tortona to Ostrow Mazowiecka | 803.74 mi (1,293.50 km) |
| Tortona to Ostrow Wielkopolski | 621.42 mi (1,000.07 km) |
| Tortona to Ostrowiec Swietokrzyski | 713.33 mi (1,148.00 km) |
| Tortona to Ostrzeszow | 613.75 mi (987.73 km) |
| Tortona to Oswiecim | 599.35 mi (964.57 km) |
| Tortona to Otwock | 754.01 mi (1,213.46 km) |
| Tortona to Ozarow Mazowiecki | 742.49 mi (1,194.92 km) |
| Tortona to Ozimek | 588.88 mi (947.72 km) |
| Tortona to Ozorkow | 682.02 mi (1,097.60 km) |
| Tortona to Pabianice | 670.95 mi (1,079.80 km) |
| Tortona to Parczew | 792.53 mi (1,275.45 km) |
