| Odorheiu Secuiesc to Opole | 451.60 mi (726.78 km) |
| Odorheiu Secuiesc to Orzesze | 401.20 mi (645.66 km) |
| Odorheiu Secuiesc to Osowa | 635.60 mi (1,022.90 km) |
| Odorheiu Secuiesc to Ostroda | 562.25 mi (904.86 km) |
| Odorheiu Secuiesc to Ostroleka | 495.37 mi (797.22 km) |
| Odorheiu Secuiesc to Ostrow Mazowiecka | 473.23 mi (761.59 km) |
| Odorheiu Secuiesc to Ostrow Wielkopolski | 500.61 mi (805.65 km) |
| Odorheiu Secuiesc to Ostrowiec Swietokrzyski | 365.42 mi (588.09 km) |
| Odorheiu Secuiesc to Ostrzeszow | 485.81 mi (781.84 km) |
| Odorheiu Secuiesc to Oswiecim | 380.16 mi (611.81 km) |
| Odorheiu Secuiesc to Otwock | 440.18 mi (708.41 km) |
| Odorheiu Secuiesc to Ozarow Mazowiecki | 455.34 mi (732.80 km) |
| Odorheiu Secuiesc to Ozimek | 442.43 mi (712.02 km) |
| Odorheiu Secuiesc to Ozorkow | 475.62 mi (765.43 km) |
| Odorheiu Secuiesc to Pabianice | 455.70 mi (733.38 km) |
