| Plymstock to Opole | 964.32 mi (1,551.92 km) |
| Plymstock to Orzesze | 1,005.15 mi (1,617.63 km) |
| Plymstock to Osowa | 987.09 mi (1,588.57 km) |
| Plymstock to Ostroda | 1,043.02 mi (1,678.58 km) |
| Plymstock to Ostroleka | 1,108.05 mi (1,783.23 km) |
| Plymstock to Ostrow Mazowiecka | 1,122.31 mi (1,806.19 km) |
| Plymstock to Ostrow Wielkopolski | 953.03 mi (1,533.75 km) |
| Plymstock to Ostrowiec Swietokrzyski | 1,111.95 mi (1,789.52 km) |
| Plymstock to Ostrzeszow | 959.10 mi (1,543.52 km) |
| Plymstock to Oswiecim | 1,027.06 mi (1,652.90 km) |
| Plymstock to Otwock | 1,097.95 mi (1,766.98 km) |
| Plymstock to Ozarow Mazowiecki | 1,077.80 mi (1,734.55 km) |
| Plymstock to Ozimek | 976.42 mi (1,571.39 km) |
| Plymstock to Ozorkow | 1,014.41 mi (1,632.54 km) |
| Plymstock to Pabianice | 1,020.05 mi (1,641.61 km) |
