| Pen-y-Bont ar Ogwr to Opole | 932.04 mi (1,499.98 km) |
| Pen-y-Bont ar Ogwr to Orzesze | 975.13 mi (1,569.32 km) |
| Pen-y-Bont ar Ogwr to Osowa | 935.31 mi (1,505.23 km) |
| Pen-y-Bont ar Ogwr to Ostroda | 994.83 mi (1,601.02 km) |
| Pen-y-Bont ar Ogwr to Ostroleka | 1,062.67 mi (1,710.20 km) |
| Pen-y-Bont ar Ogwr to Ostrow Mazowiecka | 1,078.07 mi (1,734.98 km) |
| Pen-y-Bont ar Ogwr to Ostrow Wielkopolski | 915.40 mi (1,473.20 km) |
| Pen-y-Bont ar Ogwr to Ostrowiec Swietokrzyski | 1,076.41 mi (1,732.32 km) |
| Pen-y-Bont ar Ogwr to Ostrzeszow | 922.70 mi (1,484.95 km) |
| Pen-y-Bont ar Ogwr to Oswiecim | 997.29 mi (1,604.99 km) |
| Pen-y-Bont ar Ogwr to Otwock | 1,056.94 mi (1,700.98 km) |
| Pen-y-Bont ar Ogwr to Ozarow Mazowiecki | 1,036.45 mi (1,668.00 km) |
| Pen-y-Bont ar Ogwr to Ozimek | 943.94 mi (1,519.12 km) |
| Pen-y-Bont ar Ogwr to Ozorkow | 974.68 mi (1,568.59 km) |
| Pen-y-Bont ar Ogwr to Pabianice | 981.89 mi (1,580.20 km) |
