| Porthcawl to Opole | 936.99 mi (1,507.94 km) |
| Porthcawl to Orzesze | 980.03 mi (1,577.21 km) |
| Porthcawl to Osowa | 940.46 mi (1,513.53 km) |
| Porthcawl to Ostroda | 999.98 mi (1,609.30 km) |
| Porthcawl to Ostroleka | 1,067.80 mi (1,718.45 km) |
| Porthcawl to Ostrow Mazowiecka | 1,083.19 mi (1,743.23 km) |
| Porthcawl to Ostrow Wielkopolski | 920.44 mi (1,481.31 km) |
| Porthcawl to Ostrowiec Swietokrzyski | 1,081.43 mi (1,740.39 km) |
| Porthcawl to Ostrzeszow | 927.72 mi (1,493.02 km) |
| Porthcawl to Oswiecim | 1,002.19 mi (1,612.87 km) |
| Porthcawl to Otwock | 1,062.03 mi (1,709.17 km) |
| Porthcawl to Ozarow Mazowiecki | 1,041.54 mi (1,676.19 km) |
| Porthcawl to Ozimek | 948.89 mi (1,527.09 km) |
| Porthcawl to Ozorkow | 979.75 mi (1,576.75 km) |
| Porthcawl to Pabianice | 986.94 mi (1,588.33 km) |
