| Trowbridge to Opole | 874.31 mi (1,407.07 km) |
| Trowbridge to Orzesze | 916.89 mi (1,475.60 km) |
| Trowbridge to Osowa | 885.15 mi (1,424.52 km) |
| Trowbridge to Ostroda | 942.85 mi (1,517.37 km) |
| Trowbridge to Ostroleka | 1,009.43 mi (1,624.52 km) |
| Trowbridge to Ostrow Mazowiecka | 1,024.36 mi (1,648.54 km) |
| Trowbridge to Ostrow Wielkopolski | 859.17 mi (1,382.70 km) |
| Trowbridge to Ostrowiec Swietokrzyski | 1,019.64 mi (1,640.95 km) |
| Trowbridge to Ostrzeszow | 866.09 mi (1,393.84 km) |
| Trowbridge to Oswiecim | 939.01 mi (1,511.19 km) |
| Trowbridge to Otwock | 1,001.95 mi (1,612.49 km) |
| Trowbridge to Ozarow Mazowiecki | 981.57 mi (1,579.69 km) |
| Trowbridge to Ozimek | 886.26 mi (1,426.30 km) |
| Trowbridge to Ozorkow | 919.19 mi (1,479.29 km) |
| Trowbridge to Pabianice | 925.88 mi (1,490.05 km) |
