| Trets to Orzesze | 770.41 mi (1,239.85 km) |
| Trets to Osowa | 952.04 mi (1,532.16 km) |
| Trets to Ostroda | 959.86 mi (1,544.74 km) |
| Trets to Ostroleka | 983.66 mi (1,583.05 km) |
| Trets to Ostrow Mazowiecka | 984.33 mi (1,584.13 km) |
| Trets to Ostrow Wielkopolski | 798.79 mi (1,285.54 km) |
| Trets to Ostrowiec Swietokrzyski | 898.13 mi (1,445.40 km) |
| Trets to Ostrzeszow | 792.36 mi (1,275.17 km) |
| Trets to Oswiecim | 784.30 mi (1,262.21 km) |
| Trets to Otwock | 935.79 mi (1,506.01 km) |
| Trets to Ozarow Mazowiecki | 923.35 mi (1,485.99 km) |
| Trets to Ozimek | 770.82 mi (1,240.51 km) |
| Trets to Ozorkow | 861.26 mi (1,386.07 km) |
| Trets to Pabianice | 851.49 mi (1,370.34 km) |
| Trets to Parczew | 976.98 mi (1,572.30 km) |
