| Troyan to Orzesze | 576.25 mi (927.38 km) |
| Troyan to Osowa | 846.20 mi (1,361.83 km) |
| Troyan to Ostroda | 778.16 mi (1,252.33 km) |
| Troyan to Ostroleka | 718.35 mi (1,156.07 km) |
| Troyan to Ostrow Mazowiecka | 697.37 mi (1,122.31 km) |
| Troyan to Ostrow Wielkopolski | 685.95 mi (1,103.93 km) |
| Troyan to Ostrowiec Swietokrzyski | 577.66 mi (929.65 km) |
| Troyan to Ostrzeszow | 669.57 mi (1,077.56 km) |
| Troyan to Oswiecim | 558.91 mi (899.47 km) |
| Troyan to Otwock | 657.78 mi (1,058.59 km) |
| Troyan to Ozarow Mazowiecki | 669.99 mi (1,078.24 km) |
| Troyan to Ozimek | 619.42 mi (996.87 km) |
| Troyan to Ozorkow | 676.57 mi (1,088.84 km) |
| Troyan to Pabianice | 654.87 mi (1,053.91 km) |
| Troyan to Parczew | 610.70 mi (982.83 km) |
