| Trnava to Opole | 158.92 mi (255.76 km) |
| Trnava to Orzesze | 133.19 mi (214.36 km) |
| Trnava to Osowa | 419.71 mi (675.46 km) |
| Trnava to Ostroda | 381.93 mi (614.66 km) |
| Trnava to Ostroleka | 367.63 mi (591.65 km) |
| Trnava to Ostrow Mazowiecka | 359.22 mi (578.10 km) |
| Trnava to Ostrow Wielkopolski | 226.29 mi (364.18 km) |
| Trnava to Ostrowiec Swietokrzyski | 245.40 mi (394.93 km) |
| Trnava to Ostrzeszow | 210.55 mi (338.84 km) |
| Trnava to Oswiecim | 136.37 mi (219.47 km) |
| Trnava to Otwock | 305.13 mi (491.06 km) |
| Trnava to Ozarow Mazowiecki | 300.69 mi (483.92 km) |
| Trnava to Ozimek | 161.07 mi (259.21 km) |
| Trnava to Ozorkow | 259.07 mi (416.93 km) |
| Trnava to Pabianice | 239.72 mi (385.80 km) |
