| Cwmbran to Opole | 907.41 mi (1,460.33 km) |
| Cwmbran to Orzesze | 950.74 mi (1,530.06 km) |
| Cwmbran to Osowa | 909.35 mi (1,463.47 km) |
| Cwmbran to Ostroda | 968.97 mi (1,559.40 km) |
| Cwmbran to Ostroleka | 1,036.92 mi (1,668.76 km) |
| Cwmbran to Ostrow Mazowiecka | 1,052.38 mi (1,693.64 km) |
| Cwmbran to Ostrow Wielkopolski | 890.23 mi (1,432.69 km) |
| Cwmbran to Ostrowiec Swietokrzyski | 1,051.39 mi (1,692.05 km) |
| Cwmbran to Ostrzeszow | 897.64 mi (1,444.62 km) |
| Cwmbran to Oswiecim | 972.92 mi (1,565.76 km) |
| Cwmbran to Otwock | 1,031.46 mi (1,659.98 km) |
| Cwmbran to Ozarow Mazowiecki | 1,010.95 mi (1,626.96 km) |
| Cwmbran to Ozimek | 919.27 mi (1,479.43 km) |
| Cwmbran to Ozorkow | 949.31 mi (1,527.77 km) |
| Cwmbran to Pabianice | 956.66 mi (1,539.59 km) |
