| Colwyn Bay to Opole | 934.55 mi (1,504.01 km) |
| Colwyn Bay to Orzesze | 980.73 mi (1,578.34 km) |
| Colwyn Bay to Osowa | 903.09 mi (1,453.39 km) |
| Colwyn Bay to Ostroda | 968.69 mi (1,558.95 km) |
| Colwyn Bay to Ostroleka | 1,040.93 mi (1,675.21 km) |
| Colwyn Bay to Ostrow Mazowiecka | 1,058.21 mi (1,703.03 km) |
| Colwyn Bay to Ostrow Wielkopolski | 909.18 mi (1,463.18 km) |
| Colwyn Bay to Ostrowiec Swietokrzyski | 1,071.70 mi (1,724.74 km) |
| Colwyn Bay to Ostrzeszow | 918.46 mi (1,478.12 km) |
| Colwyn Bay to Oswiecim | 1,003.01 mi (1,614.18 km) |
| Colwyn Bay to Otwock | 1,043.05 mi (1,678.63 km) |
| Colwyn Bay to Ozarow Mazowiecki | 1,022.18 mi (1,645.04 km) |
| Colwyn Bay to Ozimek | 945.94 mi (1,522.35 km) |
| Colwyn Bay to Ozorkow | 964.00 mi (1,551.40 km) |
| Colwyn Bay to Pabianice | 973.84 mi (1,567.24 km) |
