| Iernut to Opole | 409.27 mi (658.66 km) |
| Iernut to Orzesze | 358.62 mi (577.14 km) |
| Iernut to Osowa | 605.99 mi (975.24 km) |
| Iernut to Ostroda | 534.98 mi (860.97 km) |
| Iernut to Ostroleka | 472.08 mi (759.74 km) |
| Iernut to Ostrow Mazowiecka | 450.69 mi (725.32 km) |
| Iernut to Ostrow Wielkopolski | 461.49 mi (742.69 km) |
| Iernut to Ostrowiec Swietokrzyski | 335.34 mi (539.68 km) |
| Iernut to Ostrzeszow | 446.16 mi (718.02 km) |
| Iernut to Oswiecim | 338.25 mi (544.37 km) |
| Iernut to Otwock | 413.40 mi (665.31 km) |
| Iernut to Ozarow Mazowiecki | 427.02 mi (687.22 km) |
| Iernut to Ozimek | 400.71 mi (644.88 km) |
| Iernut to Ozorkow | 441.37 mi (710.32 km) |
| Iernut to Pabianice | 420.66 mi (676.99 km) |
