| Ianca to Opole | 583.49 mi (939.03 km) |
| Ianca to Orzesze | 533.26 mi (858.20 km) |
| Ianca to Osowa | 756.00 mi (1,216.66 km) |
| Ianca to Ostroda | 680.38 mi (1,094.97 km) |
| Ianca to Ostroleka | 609.23 mi (980.45 km) |
| Ianca to Ostrow Mazowiecka | 586.44 mi (943.79 km) |
| Ianca to Ostrow Wielkopolski | 630.61 mi (1,014.87 km) |
| Ianca to Ostrowiec Swietokrzyski | 488.79 mi (786.63 km) |
| Ianca to Ostrzeszow | 616.21 mi (991.70 km) |
| Ianca to Oswiecim | 512.00 mi (823.98 km) |
| Ianca to Otwock | 559.06 mi (899.72 km) |
| Ianca to Ozarow Mazowiecki | 575.77 mi (926.61 km) |
| Ianca to Ozimek | 574.07 mi (923.87 km) |
| Ianca to Ozorkow | 601.85 mi (968.59 km) |
| Ianca to Pabianice | 582.75 mi (937.85 km) |
