| Trencin to Opole | 122.71 mi (197.49 km) |
| Trencin to Orzesze | 92.63 mi (149.07 km) |
| Trencin to Osowa | 382.90 mi (616.22 km) |
| Trencin to Ostroda | 342.48 mi (551.16 km) |
| Trencin to Ostroleka | 326.68 mi (525.75 km) |
| Trencin to Ostrow Mazowiecka | 318.20 mi (512.09 km) |
| Trencin to Ostrow Wielkopolski | 190.77 mi (307.02 km) |
| Trencin to Ostrowiec Swietokrzyski | 205.60 mi (330.88 km) |
| Trencin to Ostrzeszow | 174.51 mi (280.84 km) |
| Trencin to Oswiecim | 95.40 mi (153.53 km) |
| Trencin to Otwock | 264.12 mi (425.06 km) |
| Trencin to Ozarow Mazowiecki | 259.74 mi (418.00 km) |
| Trencin to Ozimek | 123.32 mi (198.46 km) |
| Trencin to Ozorkow | 219.41 mi (353.11 km) |
| Trencin to Pabianice | 199.62 mi (321.26 km) |
